Searching the Internet may help middle-aged and older adults keep their memories sharp,US researchers said.

Researchers at the University of California, Los Angeles ,studied people doing web searches by recording their brain activity.

“What we saw was people who had Internet experience used more of their brain during the search,”Dr.Gary Small, a UCLA expert on aging, said,“This suggests that just searching on the Internet may train the brain and that it may keep it active and healthy.”

“This is the first time anyone has simulated(模拟)an Internet search task while scanning the brain,”Small said. His team studied 24 normal volunteers between the ages of 55 and 76. Half were experienced at searching the Internet and the other half had no web experience. However, the two groups were similar in age, gender and education.

Both groups were asked to do Internet searches and book reading tasks while their brain activity was monitored.

“We found that in the book reading task, the visual cortex— the part of the brain that controls reading and language — was activated,”Small said,“In doing the Internet search task, there was much greater activity, but only in the Internet-savvy（了解）group.”

He said it appears that people who are familiar with the Internet can engage in much deeper level of brain activity. Activities that keep the brain engaged can preserve brain health and thinking ability. Small thinks learning to do Internet searches may be one of those activities.

1.Researchers          when volunteers were doing web searches.

A．studied the Internet

B．activated the brain

C．recorded their memories

D．monitored the brain activity

2.The two volunteer groups were         .

A．similar in education

B．of the same age

C．good at the computer

D．book lovers

3.According to the passage, we can learn that         .

A．reading books keeps the brain more engaged

B．searching the web keeps the brain more engaged

C．watching TV keeps the brain more engaged

D．chatting online keeps the brain more engaged

4.Which of the following is TRUE?

A．When you read, the whole brain will be activated.

B．Dr.Gary Small is a UCLA expert on brain health.

C．Internet searches can preserve brain health and thinking ability

D．People who read books may have a better memory.

Searching the Internet may help middle-aged and older adults keep their memories sharp,US researchers said.
Researchers at the University of California, Los Angeles ,studied people doing web searches by recording their brain activity.
“What we saw was people who had Internet experience used more of their brain during the search,”Dr.Gary Small, a UCLA expert on aging, said,“This suggests that just searching on the Internet may train the brain and that it may keep it active and healthy.”
“This is the first time anyone has simulated(模拟)an Internet search task while scanning the brain,”Small said. His team studied 24 normal volunteers between the ages of 55 and 76. Half were experienced at searching the Internet and the other half had no web experience. However, the two groups were similar in age, gender and education.
Both groups were asked to do Internet searches and book reading tasks while their brain activity was monitored.
“We found that in the book reading task, the visual cortex— the part of the brain that controls reading and language — was activated,”Small said,“In doing the Internet search task, there was much greater activity, but only in the Internet-savvy（了解）group.”
He said it appears that people who are familiar with the Internet can engage in much deeper level of brain activity. Activities that keep the brain engaged can preserve brain health and thinking ability. Small thinks learning to do Internet searches may be one of those activities.
【小题1】Researchers          when volunteers were doing web searches.

No one knows for certain why people dream, but some dreams misht be connected to the mental processes that help us learn. In a recent study, scientists found a connection between nap-time (午睡时间) dreams and better memory in people who were learning a new skill.
“I was astonished by this finding,” Robert Stickgold told Science News. He is a cognitive neuroscientist at Harvard Medical School who worked on the study of-how the brain and nervous system work, and cognitive studies look at how people learn and reason. So a cognitive neuroscientist may study the brain processes that help people learn.
In the study, 99 college students between the ages of 18 and 30 each spent an hour on a computer, trying to get through a virtual maze (虚拟迷宫). The maze was difficult, and the study participants had to start in a different place each time they tried - making it even more difficult. They were also told to find a particular picture of a tree and remember where it was.
For the first 90 minutes of a five-hour break, half of the particularity stayed awake and half were told to take a short nap. Participants who stayed awake were asked to describe their thoughts. Participants who took a nap were asked about their dreams before sleep and after steep - and they were awakened within a minute of sleep to describe their dreams.
About a dozen of the 50 people who slept said their dreams were connected to the maze. Some dreamed about the music that had been playing when they were working; others said they dreamed about seeing people in the maze. When these people tried the computer maze again, they were generally able to find the tree faster than before their naps. However, people who had other dreams, or people who didn’t take a nap, didn’t show the same improvement.
Stickgold suggests the dream itself doesn’t help a person learn - it’s the other way around.
【小题1】It is a cognitive scientists job to study__     .

FRIDAY, Aug. 3 (Health Day News) -- Middle school students who are physically fit are likely to score higher on standardized tests measuring reading and math abilities, a new study has found. And, the average scores went up in connection with levels of fitness, the findings showed.

“The more physically fit kids were, the higher their scores,” said the study’s lead author, Trent Petrie, director of the Center for Sport Psychology at the University of North Texas in Denton. “Parents should encourage their kids to be physically active. There are some real cognitive (认知的) and academic benefits that come from physical fitness”, Petrie said.

Results of the study are scheduled to be presented Friday at the annual meeting of the American Psychological Association in Orlando, Fla. The study included more than 1,200 middle school students from five schools in a suburban area of Texas, with 561 boys and 650 girls. About 57 percent of the children were white, and nearly one-quarter were Mexican American. Nine percent were black and about 2 percent were of Asian descent.

The school district provided the researchers with information on the children’s race, age, grade level and whether they qualified for the free school lunch program, which was an indicator of the family’s socioeconomic status. The schools also provided scores to the tests, which were given between one and four months after the researchers had assessed the children’s levels of fitness. Fitness tests were administered during physical education classes to determine the youngsters’ heart and lung health (cardiorespiratory fitness), as well as their body mass index (BMI), an indicator of how much body fat a person has. The children also filled out questionnaires that helped the researchers determine factors such as self-esteem and social support.

After accounting for factors such as age, sex, family income and self-esteem, the researchers found that for both boys and girls, higher levels of heart and lung health predicted better scores on both the math and reading tests.

For boys, perceived (感观的) social support also seemed to increase their reading scores, the investigators found. In girls, while being physically fit predicted higher reading scores, so too did a higher BMI-- which indicates more body fat. “We were a little surprised by this finding,” Petrie said.

“It was not as strong an association as the one with physical fitness,” he added. The authors suspect it may have something to do with girls this age entering adolescence, which may be related to a higher BMI and slightly higher brain development. He said he plans to make great effort to look for this relationship again in larger studies to see if it was a chance finding, or if the association holds up.

“While we can’t say 100 percent that physical fitness causes better academic performance, we can say that there is a strong and predictive relationship between physical fitness and academic performance,” Petrie said.

“It’s hard to tease apart (梳理) the exact reason for this association,” said Becky Hashim, an attending clinical psychologist and assistant professor in the departments of psychiatry and pediatrics at the Children’s Hospital of Montefiore, in New York City.

“It may be that the children are getting more oxygen. When the heart and lungs are working at a higher capacity, it may allow the brain to work at peak performance. Children who are less fit may be sleepier during school,” she noted. “I personally feel that there’s probably a strong relationship between the confidence you get from being able to do something physical well and academic performance.”

Whatever the reason behind this association may be, “there’s certainly no harm in pushing physical fitness,” Hashim added. “Physical fitness may make you feel better, give you more confidence and improve your performance across the board,” she said.

Petrie agreed. “Physically fit kids are happier, have higher self-esteem and, tend to have better relationships, and now we’re beginning to see that there also seem to be benefits cognitively and academically. Our study sends a strong warning to policymakers to reconsider the service program of physical education classes for kids,” he said.

1.How did the school district help the researchers carry out the study?

A．By analyzing the data of fitness tests.

B．By giving some basic information.

C．By completing some questionnaires.

D．By offering a certain amount of Money.

2.According to the passage, the result of the study will be published ______.

A．in a book          B．in a journal        C．at a conference     D．on the Internet

3.What’s the suitable title of the passage?

A．Parents should be aware of the benefit of fitness.

B．Fitter kids are likely to make better grades.

C．Fitness affects kids’ social behavior greatly.

D．Teachers should value physical education classes.

4.What’s Becky Hashim’s attitude towards the relationship between physical fitness and academic performance?

A．Supportive        B．Indifferent         C．Critical            D．Doubtful

5.What does the underlined word “one” in Paragraph refer to?

A．The BMI.          B．The body fat.       C．The brain development.   D．The test score.

6.From the last paragraph we can infer that physically fit kids ______.

A．deserve to be treated well                B．live much longer than others

C．get along well with others                 D．enjoy a peaceful life

No one knows for certain why people dream, but some dreams misht be connected to the mental processes that help us learn. In a recent study, scientists found a connection between nap-time (午睡时间) dreams and better memory in people who were learning a new skill.

    “I was astonished by this finding,” Robert Stickgold told Science News. He is a cognitive neuroscientist at Harvard Medical School who worked on the study of-how the brain and nervous system work, and cognitive studies look at how people learn and reason. So a cognitive neuroscientist may study the brain processes that help people learn.

In the study, 99 college students between the ages of 18 and 30 each spent an hour on a computer, trying to get through a virtual maze (虚拟迷宫). The maze was difficult, and the study participants had to start in a different place each time they tried - making it even more difficult. They were also told to find a particular picture of a tree and remember where it was.

For the first 90 minutes of a five-hour break, half of the particularity stayed awake and half were told to take a short nap. Participants who stayed awake were asked to describe their thoughts. Participants who took a nap were asked about their dreams before sleep and after steep - and they were awakened within a minute of sleep to describe their dreams.

About a dozen of the 50 people who slept said their dreams were connected to the maze. Some dreamed about the music that had been playing when they were working; others said they dreamed about seeing people in the maze. When these people tried the computer maze again, they were generally able to find the tree faster than before their naps. However, people who had other dreams, or people who didn't take a nap, didn't show the same improvement.

Stickgold suggests the dream itself doesn't help a person learn - it's the other way around.

1.It is a cognitive scientists job to study__      .

    A．how people dream and learn

    C．the structure of the nervous system

    B．whether someone is reasonable

    D．the process of understanding

2.The purpose of the study attended by 99 college students is to       .

    A．find the hidden tree in the maze     

    B．test the design of a difficult virtual maze

    C．train people's memory               

    D．see how dreams and learning are connected

3.The better performance in working out the maze is connected with         .

    A．how people dream                                   B．what people dream

    C．when people dream                                  D．where people dream

4.The writer will probably continue to talk about            in the 6^th paragraph.

    A．how learning process caused the dream

    B．how a dream helps a person learn

    C．how dreams and learning influence each other

    D．how to improve people's memory

FRIDAY, Aug. 3 (Health Day News) -- Middle school students who are physically fit are likely to score higher on standardized tests measuring reading and math abilities, a new study has found. And, the average scores went up in connection with levels of fitness, the findings showed.
“The more physically fit kids were, the higher their scores,” said the study’s lead author, Trent Petrie, director of the Center for Sport Psychology at the University of North Texas in Denton. “Parents should encourage their kids to be physically active. There are some real cognitive (认知的) and academic benefits that come from physical fitness”, Petrie said.
Results of the study are scheduled to be presented Friday at the annual meeting of the American Psychological Association in Orlando, Fla. The study included more than 1,200 middle school students from five schools in a suburban area of Texas, with 561 boys and 650 girls. About 57 percent of the children were white, and nearly one-quarter were Mexican American. Nine percent were black and about 2 percent were of Asian descent.
The school district provided the researchers with information on the children’s race, age, grade level and whether they qualified for the free school lunch program, which was an indicator of the family’s socioeconomic status. The schools also provided scores to the tests, which were given between one and four months after the researchers had assessed the children’s levels of fitness. Fitness tests were administered during physical education classes to determine the youngsters’ heart and lung health (cardiorespiratory fitness), as well as their body mass index (BMI), an indicator of how much body fat a person has. The children also filled out questionnaires that helped the researchers determine factors such as self-esteem and social support.
After accounting for factors such as age, sex, family income and self-esteem, the researchers found that for both boys and girls, higher levels of heart and lung health predicted better scores on both the math and reading tests.
For boys, perceived (感观的) social support also seemed to increase their reading scores, the investigators found. In girls, while being physically fit predicted higher reading scores, so too did a higher BMI-- which indicates more body fat. “We were a little surprised by this finding,” Petrie said.
“It was not as strong an association as the one with physical fitness,” he added. The authors suspect it may have something to do with girls this age entering adolescence, which may be related to a higher BMI and slightly higher brain development. He said he plans to make great effort to look for this relationship again in larger studies to see if it was a chance finding, or if the association holds up.
“While we can’t say 100 percent that physical fitness causes better academic performance, we can say that there is a strong and predictive relationship between physical fitness and academic performance,” Petrie said.
“It’s hard to tease apart (梳理) the exact reason for this association,” said Becky Hashim, an attending clinical psychologist and assistant professor in the departments of psychiatry and pediatrics at the Children’s Hospital of Montefiore, in New York City.
“It may be that the children are getting more oxygen. When the heart and lungs are working at a higher capacity, it may allow the brain to work at peak performance. Children who are less fit may be sleepier during school,” she noted. “I personally feel that there’s probably a strong relationship between the confidence you get from being able to do something physical well and academic performance.”
Whatever the reason behind this association may be, “there’s certainly no harm in pushing physical fitness,” Hashim added. “Physical fitness may make you feel better, give you more confidence and improve your performance across the board,” she said.
Petrie agreed. “Physically fit kids are happier, have higher self-esteem and, tend to have better relationships, and now we’re beginning to see that there also seem to be benefits cognitively and academically. Our study sends a strong warning to policymakers to reconsider the service program of physical education classes for kids,” he said.
【小题1】How did the school district help the researchers carry out the study?

Searching the Internet may help middle-aged and older adults keep their memories sharp,US researchers said.
Researchers at the University of California, Los Angeles ,studied people doing web searches by recording their brain activity.
“What we saw was people who had Internet experience used more of their brain during the search,”Dr.Gary Small, a UCLA expert on aging, said,“This suggests that just searching on the Internet may train the brain and that it may keep it active and healthy.”
“This is the first time anyone has simulated(模拟)an Internet search task while scanning the brain,”Small said. His team studied 24 normal volunteers between the ages of 55 and 76. Half were experienced at searching the Internet and the other half had no web experience. However, the two groups were similar in age, gender and education.
Both groups were asked to do Internet searches and book reading tasks while their brain activity was monitored.
“We found that in the book reading task, the visual cortex— the part of the brain that controls reading and language — was activated,”Small said,“In doing the Internet search task, there was much greater activity, but only in the Internet-savvy（了解）group.”
He said it appears that people who are familiar with the Internet can engage in much deeper level of brain activity. Activities that keep the brain engaged can preserve brain health and thinking ability. Small thinks learning to do Internet searches may be one of those activities

1. 1.

   Researchers          when volunteers were doing web searches

   1. A.
      studied the Internet
   2. B.
      activated the brain
   3. C.
      recorded their memories
   4. D.
      monitored the brain activity
2. 2.

   The two volunteer groups were         

   1. A.
      similar in education
   2. B.
      of the same age
   3. C.
      good at the computer
   4. D.
      book lovers
3. 3.

   According to the passage, we can learn that         

   1. A.
      reading books keeps the brain more engaged
   2. B.
      searching the web keeps the brain more engaged
   3. C.
      watching TV keeps the brain more engaged
   4. D.
      chatting online keeps the brain more engaged
4. 4.

   Which of the following is TRUE?

   1. A.
      When you read, the whole brain will be activated
   2. B.
      Dr.Gary Small is a UCLA expert on brain health
   3. C.
      Internet searches can preserve brain health and thinking ability
   4. D.
      People who read books may have a better memory

FRIDAY, Aug. 3 (Health Day News) -- Middle school students who are physically fit are likely to score higher on standardized tests measuring reading and math abilities, a new study has found. And, the average scores went up in connection with levels of fitness, the findings showed.
“The more physically fit kids were, the higher their scores,” said the study’s lead author, Trent Petrie, director of the Center for Sport Psychology at the University of North Texas in Denton. “Parents should encourage their kids to be physically active. There are some real cognitive (认知的) and academic benefits that come from physical fitness”, Petrie said.
Results of the study are scheduled to be presented Friday at the annual meeting of the American Psychological Association in Orlando, Fla. The study included more than 1,200 middle school students from five schools in a suburban area of Texas, with 561 boys and 650 girls. About 57 percent of the children were white, and nearly one-quarter were Mexican American. Nine percent were black and about 2 percent were of Asian descent.
The school district provided the researchers with information on the children’s race, age, grade level and whether they qualified for the free school lunch program, which was an indicator of the family’s socioeconomic status. The schools also provided scores to the tests, which were given between one and four months after the researchers had assessed the children’s levels of fitness. Fitness tests were administered during physical education classes to determine the youngsters’ heart and lung health (cardiorespiratory fitness), as well as their body mass index (BMI), an indicator of how much body fat a person has. The children also filled out questionnaires that helped the researchers determine factors such as self-esteem and social support.
After accounting for factors such as age, sex, family income and self-esteem, the researchers found that for both boys and girls, higher levels of heart and lung health predicted better scores on both the math and reading tests.
For boys, perceived (感观的) social support also seemed to increase their reading scores, the investigators found. In girls, while being physically fit predicted higher reading scores, so too did a higher BMI-- which indicates more body fat. “We were a little surprised by this finding,” Petrie said.
“It was not as strong an association as the one with physical fitness,” he added. The authors suspect it may have something to do with girls this age entering adolescence, which may be related to a higher BMI and slightly higher brain development. He said he plans to make great effort to look for this relationship again in larger studies to see if it was a chance finding, or if the association holds up.
“While we can’t say 100 percent that physical fitness causes better academic performance, we can say that there is a strong and predictive relationship between physical fitness and academic performance,” Petrie said.
“It’s hard to tease apart (梳理) the exact reason for this association,” said Becky Hashim, an attending clinical psychologist and assistant professor in the departments of psychiatry and pediatrics at the Children’s Hospital of Montefiore, in New York City.
“It may be that the children are getting more oxygen. When the heart and lungs are working at a higher capacity, it may allow the brain to work at peak performance. Children who are less fit may be sleepier during school,” she noted. “I personally feel that there’s probably a strong relationship between the confidence you get from being able to do something physical well and academic performance.”
Whatever the reason behind this association may be, “there’s certainly no harm in pushing physical fitness,” Hashim added. “Physical fitness may make you feel better, give you more confidence and improve your performance across the board,” she said.
Petrie agreed. “Physically fit kids are happier, have higher self-esteem and, tend to have better relationships, and now we’re beginning to see that there also seem to be benefits cognitively and academically. Our study sends a strong warning to policymakers to reconsider the service program of physical education classes for kids,” he said

1. 1.

   How did the school district help the researchers carry out the study?

   1. A.
      By analyzing the data of fitness tests
   2. B.
      By giving some basic information
   3. C.
      By completing some questionnaires
   4. D.
      By offering a certain amount of Money
2. 2.

   According to the passage, the result of the study will be published ______

   1. A.
      in a book
   2. B.
      in a journal
   3. C.
      at a conference
   4. D.
      on the Internet
3. 3.

   What’s the suitable title of the passage?

   1. A.
      Parents should be aware of the benefit of fitness
   2. B.
      Fitter kids are likely to make better grades
   3. C.
      Fitness affects kids’ social behavior greatly
   4. D.
      Teachers should value physical education classes
4. 4.

   What’s Becky Hashim’s attitude towards the relationship between physical fitness and academic performance?

   1. A.
      Supportive
   2. B.
      Indifferent
   3. C.
      Critical
   4. D.
      Doubtful
5. 5.

   What does the underlined word “one” in Paragraph refer to?

   1. A.
      The BMI
   2. B.
      The body fat
   3. C.
      The brain development
   4. D.
      The test score
6. 6.

   From the last paragraph we can infer that physically fit kids ______

   1. A.
      deserve to be treated well
   2. B.
      live much longer than others
   3. C.
      get along well with others
   4. D.
      enjoy a peaceful life

No one knows for certain why people dream, but some dreams misht be connected to the mental processes that help us learn. In a recent study, scientists found a connection between nap-time (午睡时间) dreams and better memory in people who were learning a new skill.
“I was astonished by this finding,” Robert Stickgold told Science News. He is a cognitive neuroscientist at Harvard Medical School who worked on the study of-how the brain and nervous system work, and cognitive studies look at how people learn and reason. So a cognitive neuroscientist may study the brain processes that help people learn.
In the study, 99 college students between the ages of 18 and 30 each spent an hour on a computer, trying to get through a virtual maze (虚拟迷宫). The maze was difficult, and the study participants had to start in a different place each time they tried - making it even more difficult. They were also told to find a particular picture of a tree and remember where it was.
For the first 90 minutes of a five-hour break, half of the particularity stayed awake and half were told to take a short nap. Participants who stayed awake were asked to describe their thoughts. Participants who took a nap were asked about their dreams before sleep and after steep - and they were awakened within a minute of sleep to describe their dreams.
About a dozen of the 50 people who slept said their dreams were connected to the maze. Some dreamed about the music that had been playing when they were working; others said they dreamed about seeing people in the maze. When these people tried the computer maze again, they were generally able to find the tree faster than before their naps. However, people who had other dreams, or people who didn’t take a nap, didn’t show the same improvement.
Stickgold suggests the dream itself doesn’t help a person learn - it’s the other way around.

1. 1.

   It is a cognitive scientists job to study__     .

   1. A.
      how people dream and learn
   2. B.
      the structure of the nervous system
   3. C.
      whether someone is reasonable
   4. D.
      the process of understanding
2. 2.

   The purpose of the study attended by 99 college students is to       .

   1. A.
      find the hidden tree in the maze
   2. B.
      test the design of a difficult virtual maze
   3. C.
      train people’s memory
   4. D.
      see how dreams and learning are connected
3. 3.

   The better performance in working out the maze is connected with         .

   1. A.
      how people dream
   2. B.
      what people dream
   3. C.
      when people dream
   4. D.
      where people dream
4. 4.

   The writer will probably continue to talk about            in the 6^th paragraph.

   1. A.
      how learning process caused the dream
   2. B.
      how a dream helps a person learn
   3. C.
      how dreams and learning influence each other
   4. D.
      how to improve people’s memory

What’s delicious to eat and comes in a variety of colors? Eggplant! And no, it has nothing to do with chickens! This strangely named vegetable is, however, as versatile as an egg．It can be steamed, fried, and baked．It can be eaten by itself or combined with meats and other vegetables．

Eggplant was first grown in India in the 5th century BC．Its popularity soon spread to China and then throughout Asia．Finally, during the Middle Ages the vegetable made its way to Europe．At that time, eggplant was not the shiny purple vegetable most people know today．Instead, it’s like a white egg．Due to this egg - like appearance, eggplant got its name．In its early days, the vegetable was so bitter that people often called it a “mad apple.” This nickname started because people believed its bitterness was bad for one' s health．People actually thought eggplant could cause madness and cancer．

Fortunately today people know that eggplant doesn't cause insanity or cancer．In fact eggplant is so healthy that it may prevent cancer．In addition, the brain and the heart benefit from this super vegetable．Since it's high in fiber, eggplant can improve digestion．

Italy, Turkey, Egypt, China and Japan are the leading growers of eggplant in the world today．Depending on its location, eggplant may be purple, green, orange or yellow - white．And it can be as small as a tomato or as large as a cucumber．Dish varieties range from simple to complex, with all of them being delicious．

Today, thousands of people gather in Loomis, Calif, for the annual Loomis Eggplant Festival．The main activity at the festival is eating delicious eggplant dishes．There is plenty more to do and see, though．Recipe contests, arts and crafts, performers, races and children's activities all “egg – cite” festival - goers．Most people at the festival would agree—eggplant is an “egg—cellent” vegetable．

1.Eggplant got its name because of its _____．

2.Which of the following does NOT belong to the qualities of eggplant?

3.Which of the following is true according to the passage?

4.Most people come to the Loomis Eggplant Festival to_____．

It's time you started eating sensibly. Experts at the first Chinese Students Nutrition and Health Festival in Kunming last week listed eight bad eating habits.
●Watching television while having meals or snacks.
Doing this means you don't pay attention to your food, forget how full you are, and so overeat. It can also cause digestion (消化) diseases. One way to avoid this is only to eat in certain areas of your home.
● Replacing meals with snacks.
Many students think that eating small snacks can help them diet. But it often results in overeating and health problems related to a lack of vegetables, carbohydrates (碳水化合物),proteins and vitamins. Snacking only works if it is well planned and includes healthy foods such as nuts, vegetables, fruit and yogurt.
●Having drinks rather than water.
Fizzy (有气泡的) drinks and fruit juice are usually high in calories and sugar, which can
cause weight problems. Water is important in making your brain cells and every organ in your body work properly. For your body to burn fat, it needs at least eight glasses of pure water a day. Liquids like soda and coffee actually take water away from your body.
●Refusing to drink milk.
Milk is the best natural food—it provides you with protein, which makes your bones strong and teeth healthy.
● Choosing meat and certain vegetables over others.
Different foods provide different kinds of nutrition. If you don't have a balanced diet, this can result in malnutrition (营养失调) and a weaker body.
●Eating in front of the computer and staying there after meals.
Take a walk after eating and it helps your stomach digest the meal.
●Buying from roadside snack bars.
If you shop at these places, be careful—many are not clean enough.
● Eating throat tablets as if they were sweets.
If you eat throat tablets when you have no throat disease, they may affect the bacteria in your mouth and cause real throat problems.
【小题1】______ can possibly cause digestion problem.

Nature is full of color, from rainbows and roses to butterfly wings and peacock tails. Even the fruits and vegetables you eat have different colors: blue blueberries, red strawberries, green broccoli, and orange carrots.

Plant and animals often use color to attract attention. The substances responsible for these colors belong to a class of chemical called antioxidants(抗氧化物). Plants make antioxidant to protect themselves from the sun’s ultraviolet(UV)(紫外线)light.

Ultraviolet light causes chemicals called free radicals(自由基)to form within plant cells. They can destroy parts of plant. Free radicals also have damaging effects on human beings. Some of these effects like wrinkled skin can be seen. The damage is caused by the free radicals attacking cells in our bodies. Certain cancers and heart disease are linked to free radicals.

Our bodies have natural defences for fighting off free radicals. While we are young, our defences are pretty strong. However, they get weaker as we get older. The body’s built-in defences can only go so far without extra help.

The key to fighting free radicals with fruits and vegetables is to mix and match colors. It’s like sunscreen(防晒霜)for the inside of your body. Go for a range of very bright colors. Colorful foods contain hundreds of healthy chemicals not found anywhere else.

Research into how chemicals in blueberries affect the brain’s function in rats suggests that these chemicals may help our own brains work more efficiently.

Don’t just blame the sun. Ultraviolet light isn’t the only source of free radicals. If you breathe polluted air such as smog, automobile exhaust(废气), or wasted gas from a factory, you take in chemicals that also cause such damage. And, the body itself produces free radicals as it processes food.

1.Which of the following not true?

A．Antioxidants are responsible for plant colors

B．Plants use color to attract attention

C．Antioxidants can protect plants from UV light

D．Antioxidants help free radicals to attack plants

2.In which order do the following facts occur?

a Wrinkled skin can be seen

b UV light causes free radicals to form

c Free radicals damage cells in our bodies

d The sun gives out UV light

A．a,b,c,d                                B．d,b,c,a

C．c,a,d,b                                D．d,b,a,c

3.We need extra help for fighting off free radicals from fruits and vegetables because ____.

A．our bodies’ defences are not natural

B．we are too young to defend ourselves

C．our defences get weaker as we get older

D．our bodies’ built-in defences can only go away

4.Which of the following can not cause free radicals to form?

A．Colorful food                          B．UV light from the sun

C．Polluted air                            D．The body itself

It's time you started eating sensibly. Experts at the first Chinese Students Nutrition and Health Festival in Kunming last week listed eight bad eating habits.

    ●Watching television while having meals or snacks.

    Doing this means you don't pay attention to your food, forget how full you are, and so overeat. It can also cause digestion (消化) diseases. One way to avoid this is only to eat in certain areas of your home.

    ● Replacing meals with snacks.

    Many students think that eating small snacks can help them diet. But it often results in overeating and health problems related to a lack of vegetables, carbohydrates (碳水化合物),proteins and vitamins. Snacking only works if it is well planned and includes healthy foods such as nuts, vegetables, fruit and yogurt.

●Having drinks rather than water.

Fizzy (有气泡的) drinks and fruit juice are usually high in calories and sugar, which can

cause weight problems. Water is important in making your brain cells and every organ in your body work properly. For your body to burn fat, it needs at least eight glasses of pure water a day. Liquids like soda and coffee actually take water away from your body.

●Refusing to drink milk.

Milk is the best natural food—it provides you with protein, which makes your bones strong and teeth healthy.

    ● Choosing meat and certain vegetables over others.

    Different foods provide different kinds of nutrition. If you don't have a balanced diet, this can result in malnutrition (营养失调) and a weaker body.

●Eating in front of the computer and staying there after meals.

Take a walk after eating and it helps your stomach digest the meal.

●Buying from roadside snack bars.

If you shop at these places, be careful—many are not clean enough.

    ● Eating throat tablets as if they were sweets.

    If you eat throat tablets when you have no throat disease, they may affect the bacteria in your mouth and cause real throat problems.

______ can possibly cause digestion problem.

A. Eating while sitting in front of TV or computer

B. Eating throat tablets as if they were sweets.

C. Choosing certain kinds of food over others.

D. Buying from roadside snack bars.

Why can't soft drinks be drunk in place of water when you feel thirsty?

A. They help brain cells work properly.      B. They make your body sick.

C. They take water away from your body.    D. They supply energy for your body.

Which of the following is NOT the habit that will possibly result in a lack of nutrition?

A. Often eating small snacks.            B. Never drinking milk.

C. Always eating the same kinds of food.   D. Staying in front of a computer after the meal.

You are what you eat. So maybe it’s time you started eating sensibly. Experts at the first Chinese Students Nutrition and Health Festival in Kunming last week singled out (挑选） several bad eating habits.

Watching television while having meals or snacks.

Doing this means you don’t pay attention to your food, forget how full you are and so overeat. It can also cause digestion(消化) diseases. One way to avoid this is only to eat in certain areas of your home.

.  Replacing meals with snacks.

Many students think that eating small snacks can help them diet. But it often results

In overeating and health problems related to a lack of vegetables,carbohydrates, proteins and vitamins. Snaking only works if it is well planned and includes healthy foods such as nuts, vegetables, fruit and yogurt.

.Having drinks rather than water.

Fizzy(有气泡的)drinks and fruit juice are usually high in calories and sugar, which can cause weight problems. Water is important in making your brain cells and every organ in your body work properly. For your body to burn fat,it needs at least eight glasses of pure water a day. Liquids like soda(苏打水)and coffee actually take water away from your body.

.Choosing meat and certain vegetables over others.

Different foods provide different kinds of nutrition. If you don't have a balanced diet,

this can result in malnutrition(营养失调)and a weaker body.

.Eating throat tablets(润喉片)as if they were sweets.

If you eat throat tablets when you have no throat disease, they may affect the bacteria

(细菌)in your mouth and cause real throat problems.