Losing a baby tooth can be fun for a kid. You can put it under your pillow and look forward to finding some money there in the morning. And then you can watch your new permanent(永恒的) tooth grow in its place.
But if a permanent tooth falls out, that’s a problem. There isn’t another one under the gum(齿龈) that can replace it. Unfortunately, this happens to some older people. And if permanent teeth fall out or need to be pulled, an older person might need dentures(假牙).
Dentures, known as false teeth, are a set of replacement teeth for any teeth that are missing. There are partial dentures, which take the place of only a few teeth and prevent the others from changing position. If all the teeth are gone, the person would need complete dentures, which replace every tooth in the mouth.
Dentures can cause pains at first and take little time to get adjusted to. They also need special care. They should be brushed daily with a special denture brush and cleanser and soaked(浸泡) in denture solution when not in the mouth.
Dentures are important for the old because, without teeth, it’s hard to smile, talk, and eat properly. But it can be a little weird if you see someone take out his or her dentures. It can also be strange to see someone, like a grandparent, without dentures in because he or she won’t have any teeth. Try not to make fun of the person because this could cause hurt feelings.
People usually lose their permanent teeth due to periodontal disease(牙周炎), or gum disease, which is caused by bacteria that attacks the gums. Diseased gums aren’t strong and healthy, so teeth can get loose and fall out. Older people often have many cavities(洞) that have been filled over the years, and these fillings can weaken over time, leading to more tooth problems.
【小题1】If one of your baby teeth falls out, you .
| A．should have a false tooth fixed in its place |
| B．have to put it under your pillow at once |
| C．will gain a permanent tooth in future |
| D．can exchange it for some money |
| A．should brush them with a special denture brush every few days |
| B．will take a very long time to adjust himself or herself to them |
| C．will experience unpleasant feelings at the beginning of fixing them |
| D．should use denture solution to soak them in his or her mouth |
| A．inconvenient | B．excited | C．uncomfortable | D．impolite |
【小题1】C
【小题2】C
【小题3】C
解析试题分析：文章介绍牙齿的生长，从乳牙到恒牙，恒牙掉了只好装假牙，假牙一开始会不舒服，要适应一段时间，还有也牙齿有关的疾病。
【小题1】细节题：从文章第一段的句子：And then you can watch your new permanent(永恒的) tooth grow in its place.可知如果你的一个乳牙掉了，你在未来会长出一颗恒牙。选C
【小题2】细节题：从文章第四段的句子：Dentures can cause pains at first and take little time to get adjusted to.可知如果一个人戴假牙，一开始装的时候，会体验不愉快的感觉，选C
【小题3】猜词题：从文章第五段的句子：But it can be a little weird if you see someone take out his or her dentures.看见一个人将假牙拿出来的时候，会让人不舒服，可知“weird” 的意思是“不舒服的”，选C
考点：考查日常生活类短文
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欣语文化快乐暑假沈阳出版社系列答案科目：高中英语 来源： 题型：阅读理解
Dogs and cats are not for students who live in the dormitory. Just think about the noise, the smell and all that wild behaviorchewing on whatever they can get their teeth on, or knocking over the trash can. But don't feel sad. There are smaller and less destructive pets to make your dormitory life colorful.
Betta fish
They make great pets with their big personality and astonishing colors, ranging from bright red, dark blue to lemon yellow. Unlike many fish, most bettas react to their owner's presence and become more active when they are nearby, which is unusual in the fish world.
Chinchillas
Without bad smell, about the size of a rabbit and with fur so dense that they can't get pests such as fleas(跳蚤), the friendly creature originally from the Andes Mountains in South America makes an ideal indoor pet. Chinchillas are very social animals, so if you only have one, you will become its family. In cold winter days, in a glace at this fury pet in a dorm will bring you a lot of warmth.
Land hermit crabs
In a society where owners are often asked “Are they tasty？”， land hermit crabs are among the most unlucky animals commonly kept as pets. But they are easy to care for, inexpensive and fascinating to watch. And the fact that they don't cause any allergic reactions makes them perfect for college dormitories.
Redeared sliders
If you're interested in a lifelong friend, a redeared slider makes a wonderful pet. If well cared for, they can live for around 40 years. But there are a couple of things you should know. Redeared can grow to an adult size of up to 30cm! So you may need a larger tank quickly. In addition, you will need to provide UV lighting, water heater, and a swimming area and a basking (晒太阳) area. Housing a red eared slider is not easy.
【小题1】All the dormitory pets mentioned in the text are ________.
| A．active and allergic | B．quiet and peaceful |
| C．colorful and tasty | D．small and smelly |
| A．Bettas are active and rich in colors. |
| B．Chinchillas are originally mountain animals. |
| C．Land hermit crabs are allergic but tasty. |
| D．Redeared sliders need more care from the owner. |
| A．Betta fish | B．Chinchillas |
| C．Land hermit crabs | D．Redeared sliders |
| A．introduce the best way to keep pets |
| B．offer useful tips for choosing pets |
| C．inform students of lifestyle of pets |
| D．recommend some dormitory pets |
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科目：高中英语 来源： 题型：阅读理解
Can you believe everything that you read? It seems as if every day, some new articles come out about a new discovery about this or that. For example, water is bad for you, or good for you. The answer depends on which scientific study has just come out. People cannot decide which food items are healthy, how pyramids were constructed, and why dinosaurs disappeared. When we look for answers we sometimes can believe persuasive researches and scientists. But how trustworthy are they really? Here are two examples of scientific hoaxes (骗局).
As far back as 1726, Johann Beringer was fooled by his fellow scientists into thinking he had made an amazing discovery. The fossils of spiders, lizards, and even birds with the name of God written on them in Hebrew were unlike anything that had been found before. He wrote several papers on them and was famous for those only to have it revealed that they were planted by jealous colleagues to ruin his reputation.
When an early human being was discovered in 1912, scientists at this time were wild with excitement over the meaning it had for the theory of evolution. There were hundreds of papers about this Piltdown man over the next fifty years until it was finally discovered to be a complex hoax. The skull (头骨) of a man had been mixed with the jawbone of an orangutan (猩猩) to make the ape (猿) man.
The next time you read the exciting new findings of a study of the best scientist, do not automatically assume that it is true. Even qualified people can get it wrong. While we certainly should not ignore scientific research, we do need to take it with a grain of salt. Just because it is accepted as the truth today does not mean it will still be trustworthy tomorrow.
【小题1】What does Paragraph 1 want to say?
| A．Researchers and scientists are not perfect. |
| B．Something that we read may not be true. |
| C．Researchers and scientists know everything. |
| D．People don’t know whether water is good or bad. |
| A．His fellow scientists wanted to make fun of him. |
| B．His workmates are eager to become famous too. |
| C．These scientists made a mistake because of carelessness. |
| D．His colleagues envied him and did so to destroy his fame. |
| A．was in fact a complex hoax |
| B．was a great scientific invention |
| C．contributed to the theory of evolution |
| D．had the skull like that of an ape |
| A．Happily. | B．Generally. | C．Doubtfully. | D．Completely. |
| A．Hebrew is probably a kind of language. |
| B．Truths of science will never be out of time. |
| C．People believe scientists because they are persuasive. |
| D．We are advised to believe famous scientists. |
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科目：高中英语 来源： 题型：阅读理解
Hacking our senses to boost learning power
Some schools are pumping music, noises and pleasant smells into the classroom to see if it improves exam results. Could it work? Why do songs stick in our heads? What does your school smell like? Is it noisy or peaceful?
It might not seem important, but a growing body of research suggests that smells and sounds can have an impact on learning, performance and creativity. Indeed, some head teachers have recently taken to broadcasting noises and pumping smells into their schools to see whether it can boost grades. Is there anything in it? And if so, what are the implications for the way we work and study?
There is certainly some well-established research to suggest that some noises can have a harmful effect on learning. Numerous studies over the past 15 years have found that children attending schools under the flight paths of large airports fall behind in their exam results. Bridget Shield, a professor of acoustics (声学) at London South Bank University, and Julie Dockrell, from the Institute of Education, have been conducting studies on the effects of all sorts of noises, such as traffic and sirens (汽笛), as well as noise generated by the children themselves. When they recreated those particular sounds in an experimental setting while children completed various learning tasks, they found a significant negative effect on exam scores. “Everything points to a bad impact of the noise on children’s performance, in numeracy, in literacy, and in spelling,” says Shield. The noise seemed to have an especially harmful effect on children with special needs.
Whether background sounds are beneficial or not seems to depend on what kind of noise it is — and the volume. In a series of studies published last year, Ravi Mehta from the College of Business at Illinois and his colleagues tested people’s creativity while exposed to a soundtrack made up of background noises — such as coffee-shop chatter and construction-site drilling — at different volumes. They found that people were more creative when the background noises were played at a medium level than when volume was low. Loud background noise, however, damaged their creativity.
Many teachers all over the world already play music to students in class. Many are inspired by the belief that hearing music can boost IQ in later tasks, the so-called Mozart effect. While the evidence actually suggests it’s hard to say classical music boosts brainpower, researchers do think pleasant sounds before a task can sometimes lift your mood and help you perform well, says Perham, who has done his own studies on the phenomenon. The key appears to be that you enjoy what you’re hearing. “If you like the music or you like the sound — even listening to a Stephen King novel — then you do better. It doesn’t matter about the music,” he says.
So, it seems that schools that choose to prevent disturbing noises and create positive soundscapes could enhance the learning of their students, so long as they make careful choices. Yet this isn’t the only sense being used to affect learning. Special educational needs students at Sydenham high school in London are being encouraged to revise different subjects in the presence of different smells — grapefruit scents for maths, lavender for French and spearmint for history.
【小题1】The four questions in the first paragraph are meant to ________.
| A．create some sense of humour to please the readers |
| B．provide the most frequently asked questions in schools nowadays |
| C．hold the readers’ attention and arouse their curiosity to go on reading |
| D．declare the purpose of the article: to try to offer key to those questions |
| A．Peaceful music plays an active role in students’ learning. |
| B．Not all noises have a negative impact on children’s performance. |
| C．We should create for school children a more peaceful environment. |
| D．Children with special needs might be exposed to some particular sounds. |
| A．students’ creativity improves in a quiet environment |
| B．we may play some Mozart music while students are learning |
| C．a proper volume of background noises does improve creativity |
| D．noise of coffee-shop chatter is better than that of construction-site drilling |
| A．ambiguous | B．doubtful | C．negative | D．supportive |
| A．Experts’ research into other senses that can improve students’ grades. |
| B．More successful examples of boosting learning power by using music. |
| C．Suggestions for pumping lots of pleasant smells into school campuses. |
| D．Debates on whether noises can really have positive effect on students’ performance. |
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科目：高中英语 来源： 题型：阅读理解
When my family moved to America from a small village in Guangdong, China, we brought not only our luggage, but also our village rules, customs and culture. One of the rules is that young people should always respect elders. Unluckily, this rule led to my very first embarrassment in the United States.
I had a part-time job as a waiter in a Chinese restaurant. One time, when I was serving food to a middle-aged couple, the wife asked me how the food could be served so quickly. I told her that I had made sure they got their food quickly because I always respect the elderly. As soon as I said that, her face showed great displeasure. My manager, who happened to hear what I said, took me aside and gave me a long lecture about how sensitive(敏感) Americans are and how they dislike the description “old”. I then walked back to the table and apologized to the wife. After the couple heard my reason, they understood that the problem was caused by cultural differences, so they laughed and were no longer angry.
In my village in China, people are proud of being old. Not so many people live to be seventy or eighty, and people who reach such an age have the most knowledge and experience. Young people always respect older people because they know they can learn from their rich experience.
However, in the United States, people think “growing old” is a problem since “old” shows that a person is going to retire or that the body is not working well. Here many people try to keep themselves away from growing old by doing exercises or jogging, and women put on makeup, hoping to look young. When I told the couple in the restaurant that I respect the elderly, they got angry because this caused them to feel they had failed to stay young. I had told them something they didn’t want to hear.
After that, I changed the way I had been with older people. It is not that I don’t respect them any more; I still respect them, but now I don’t show my feelings through words.
【小题1】Jack brought the couple their food very fast because[_______________.
| A．the manager asked him to do so | B．he respected the elderly |
| C．the couple wanted him to do so | D．he wanted more pay |
| A．nervous | B．satisfied |
| C．unhappy | D．excited |
| A．people dislike being called “old” |
| B．people are proud of being old |
| C．many people reach the age of seventy or eighty |
| D．the elderly are the first to get food in restaurants |
| A．lost his job in the restaurant |
| B．made friends with the couple |
| C．no longer respected the elderly |
| D．changed his way with older people |
| A．The more Jack explained, the angrier the couple got. |
| B．Jack wanted to show his feelings through words after his experience. |
| C．The manager went back to the table and apologized to the couple. |
| D．From this experience, Jack learned more about American culture. |
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科目：高中英语 来源： 题型：阅读理解
LONDON（Reuters）—Organic fruit, delivered right to the doorstep．That is what Gabriel Gold prefers, and he is willing to pay for it．If this is not possible, the 26-year-old computer technician will spend the extra money at the supermarket to buy organic food．
“Organic produce is always better,” Gold said．“The food is free of pesticides（农药）, and you are generally supporting family farms instead of large farms．And more often than not it is locally grown and seasonal, so it is more tasty．” Gold is one of a growing number of shoppers buying into the organic trend, and supermarkets across Britain are counting on more like him as they grow their organic food business．But how many shoppers really know what they are getting, and why are they willing to pay a higher price for organic produce? Market research shows that Gold and others who buy organic food can generally give clear reasons for their preferences—but their knowledge of organic food is far from complete．For example, small amounts of pesticides can be used on organic products．And about three quarters of organic food in Britain is not local but imported to meet growing demand．“The demand for organic food is increasing by about one third every year, so it is a very fast-growing market,” said Sue Flock, a specialist in this line of business．
【小题1】More and more people in Britain are buying organic food because _____．
| A．they are getting richer |
| B．they can get the food anywhere |
| C．they like home-grown fruit |
| D．they consider the food free of pollution |
| A．It grows indoors all year round． |
| B．It is grown on family farms |
| C．It is produced outside Britain． |
| D．It is produced on large farms． |
| A．better quality of organic food． |
| B．growing interest in organic food． |
| C．rising market for organic food． |
| D．higher prices of organic food． |
| A．The making of organic food in Britain． |
| B．Organic food—to import or not? |
| C．Good qualities of organic food． |
| D．Organic food—healthy, or just for the wealthy? |
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科目：高中英语 来源： 题型：阅读理解
“Eat local. ” It’s one way to reduce human effect on the planet. Eating local means to try to buy and consume foods that are grown in places close to home. However, most of the food sold at supermarkets is not locally grown or produced. Trucks and planes deliver these foods from hundreds or thousands of miles away. During the transportation, greenhouse(温室)gases are produced, causing global warming. So the shorter the distance your foods must travel, the less the harm is done to the environment.
But how do you get local food if you live in a large city, hundreds of miles away from farms？Environmental health scientist Dickson Despommier and his students came up with the idea of a “vertical(垂直的) farm”. 
A vertical farm is a glass-walled structure that could be built as tall as a skyscraper(摩天大楼). Since the garden is built upwards, rather than outwards, it requires much less space than an ordinary farm. The world is quickly running out of room for ordinary farming. Vertical farms could be a key to this situation. Despommier imagines a 30-story building with a greenhouse on every floor. The walls of the building would be clear, to allow crops to get as much sunlight as possible. Depending on a city’s water resources, Despommier thinks hydroponic(水培的) farming is another method for the vertical farm which needs no soil to grow plants.
Despommier says the hydroponic greenhouses would use a system that would use a city’s waste water and fill it with nutritions to make the crops grow. If this method works, it would provide food to a city and save millions of tons of water.
The idea of a vertical farm has attracted the attention of government officials around the world. Scott Stringer, a government official from New York City, thinks the city is suitable for the vertical farming. “Obviously we don’t have much land left for us,” Stringer said. “But the sky is the limit in Manhattan. ”
Despommier admits that there is still a lot of work to do to make vertical farms a reality. “But I think vertical farming is an idea that can work in a big way,” he says.
【小题1】Why are people advised to eat local?
| A．Because it means convenience(方便) to people. |
| B．Because it can help people save a lot of money. |
| C．Because local food has more nutrition. |
| D．Because it is environmentally friendly. |
| A．It produces healthier food. |
| B．It does less harm to the cities. |
| C．It needs less space of the city. |
| D．It requires less transport costs. |
| A．people can make full use of vertical space of Manhattan |
| B．there is a limit for using empty land in Manhattan |
| C．the height of buildings in Manhattan is limited |
| D．Manhattan can spread as far as possible |
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科目：高中英语 来源： 题型：阅读理解
Nelson Mandela was a figure of international fame, and many details of his life and career were public knowledge. But here are four things you may not have known about the late South African leader.
1. He was a boxing fan.
In his youth, Nelson Mandela enjoyed boxing and long-distance running. Even during the 27 years he spent in prison, he would exercise every morning. "I did not enjoy the violence of boxing so much as the science of it. I was curious by how one moved one's body to protect oneself, how one used a strategy both to attack and retreat, how one paced oneself over a match," he wrote in his autobiography Long Walk to Freedom.
2. His original name was not Nelson.
Rolihlahla Mandela was nine years old when a teacher at the primary Methodist school where he was studying in Qunu, South Africa, gave him an English name “Nelson” in accordance with the custom to give all school children Christian names.
3. He forgot his glasses when he was released from prison.
Mr. Mandela's release on 11 February 1990 followed years of political pressure against apartheid(种族隔离). Mr. Mandela's reading glasses stayed behind in prison. Mr. Mandela and his then-wife Winnie were taken to the centre of Cape Town to address a huge and exciting crowd. But when he pulled out the text of his speech, he realized he had forgotten his glasses and had to borrow Winnie's.
4. He had his own law firm, but it took him years to get a law degree.
Mr. Mandela studied law on and off for 50 years from 1939, failing about half the courses he took. A two-year diploma(学位证书) in law on top of his university degree allowed him to practice, and in August 1952, he and Oliver Tambo set up South Africa's first black law firm, Mandela and Tambo, in Johannesburg. He kept on studying hard to finally secure a law degree while in prison in 1989.
【小题1】What is the main idea of the passage?
| A．Nelson Mandela’s life in the prison. |
| B．Unknown things about Nelson Mandela. |
| C．Nelson Mandela’s hobbies and career. |
| D．The achievements of Nelson Mandela. |
| A．Because he wanted to be a boxer. |
| B．Because he loved the science in boxing. |
| C．Because he enjoyed the violence of boxing. |
| D．Because he had nothing else to do in the prison. |
| A．He broke his glasses into pieces. |
| B．He left his own glasses at home. |
| C．He had to use his wife’s glasses. |
| D．His wife wanted to borrow his glasses. |
| A．Nelson Mandela was not his original name. |
| B．Nelson Mandela was the name given by his teacher. |
| C．Nelson Mandela had started his own law firm before he got a law degree. |
| D．Nelson Mandela had been studying the law nonstop for 50 years. |
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科目：高中英语 来源： 题型：阅读理解
While income worry is a rather common problem of the aged, loneliness is another problem that aged parents may face. Of all the reasons that explain their loneliness, a large geographical distance between parents and their children is the major one. This phenomenon is commonly known as “Empty Nest syndrome”.
In order to find better chances outside their countries, many young people have gone abroad, leaving their parents behind with no clear idea of when they will return home. Their parents spend countless lonely days and nights, taking care of themselves, in the hope that someday their children will come back to stay with them. The fact that most of these young people have gone to Europeanized or Americanized societies makes it unlikely that they will hold as tightly to the value of duty as they would have if they had not left their countries. Whatever the case, it has been noted that the values they hold do not necessarily match what they actually do. This geographical and cultural distance also prevents the grown-up children from providing response in time for their aged parents living by themselves.
The situation in which grown-up children live far away from their aged parents has been described as “distant parent phenomenon”, which is common both in developed countries and in developing countries. Our society has not yet been well prepared for “Empty Nest Syndrome”.
【小题1】According to the passage, the loneliness of aged parents is mainly caused by ________.
| A．their earlier experience of living alone |
| B．the poor living conditions in their native countries |
| C．the common worry that they have not saved much money |
| D．the distance between where parents live and where their children live |
| A．realize their dreams in foreign countries |
| B．seek a better place for their aged parents |
| C．live in the countries with more money |
| D．continue their studies abroad |
| A．they do not hold to the value of duty at all |
| B．they can give some help to their parents back home |
| C．they cannot do what they should for their parents |
| D．they believe what they actually do is right |
| A．the situations in the developed and developing countries are different |
| B．“Empty Nest Syndrome” has arrived unexpectedly in our society |
| C．children will become independent as soon as they go abroad |
| D．the aged parents are not fully prepared for “Empty Nest Syndrome” |
| A．France | B．America | C．China | D．Britain |
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