Air pollution is one of the hottest topics at present because poor air quality is an important factor in both the incidence and cause of respiratory(呼吸道) diseases.

Zhong Nanshan, a deputy to the NPC and a member of the CAE, said recently when the concentration of PM2.5 rises by 10 micrograms per cubic meter, hospitalization may rise by as much as 3.1 percent. Meanwhile, when the concentration of PM2.5 rises from 25 mgs per cubic meter to 200, the average daily death rate may rise to 11 percent.

Zhi Xiuyi, a leading expert in lung cancer treatment and also vice-president of the CATS, said medical authorities used to focus on tobacco control as a primary means of preventing lung cancer. "But in fact, air pollution is no less harmful than smoking and our research team released a report earlier this year showing that the cancer rate in Beijing is closely related to industrialization," he said.

The report, conducted by the Beijing Institute of Cancer Research, shows that the number of cancer patients in China has increased markedly during the past ten years. Chaoyang District, the city's main area of industrialization, has the highest incidence of cancer, almost double that of Yanqing, an area on the outskirts of the city. About four out of 1000 Chaoyang residents have some form of the disease, with lung cancer at the top of the list.

"The risk of having cancer largely depends on the length of exposure and the concentration of noxious gases(有毒气体的浓度)," said Zhi. In response to the doubt whether seven years' exposure to poor air quality will almost result in cancer, Zhi said the time scale was taken from research overseas that suggested the rate of incidence generally peaked in the seventh year of exposure to a heavily polluted environment.

1. What is the passage mainly about?

A. Medical researches on environment.

B. The disadvantages in big cities.

C. The only reason for the lung cancer.

D. Poor air quality contributing to lung cancer.

2.What can you conclude from the 3rd paragraph?

A. Compared with smoking, air pollution is more harmful.

B. Air pollution is as harmful as smoking.

C. It is very important to prevent people from smoking.

D. People realize the importance of keeping healthy.

3.If there were 3,000,000 people in Chaoyang District, how many would have respiratory diseases?

A. 16000?????? B. 12000?????? C. 8000??????? D. 7500

4.What can you infer from the passage?

A. Industrialization has its weakness as well as strengths.

B. The average death rate rises with different ages and places.

C. The air in Beijing is much more polluted than that in the other cities.

D. The more heavily-polluted air you breathe in, the sooner you’ll have cancer.

Harry’s father bought a magazine which gave its readers information about all kinds of products and helped them make the best choice while buying.

Harry borrowed his father’s magazine when he needed a new computer. “I’ll read it and choose the best one.” He said.

The magazine described these computers.

     Harry chose the BNK 975XF. “I know it’s expensive,” he said, “but it will be with me for a long time and do everything I want it to do.”

1. Harry wants to buy a computer, so he borrowed ___________ from his father.

   A. a magazine about all kinds of products           B. a computer magazine

   C. a shopping book              D. a book about all kinds of computers 

2. ____________ doesn’t have much memory and is rather slow.

   A. The BNK 975XF                B. The DGT PC450

C. The CGP 8PT                       D. Harry’s computer

3. The CGP 8PT is _____________ among the three kinds of computers.

   A. the fastest      B. the most expensive   C. the cheapest    D. the slowest

4.Harry chose the BNK 975XF because _________.

   A. it is the most expensive             B. it has lots of good software

   C. it has much memory           D. it would work for him for a long time

Little Mark is only 6, but he has an IQ of 200, a genius among geniuses. But his intelligence comes at a cost. His parents must keep him intellectually simulated（启发）while making sure he is like any other little boy.

Mark has been attracted by the way how the world works since he was a baby. When he was 3, Mark was reading fluently, mostly self-taught. His parents haven't been able to keep him away from books since.

"I tried many times to stop him reading. We worry about his crazy fond of reading because he constantly wants to read every-thing whatever it is.”

A psychologist at the Centre for gifted children tested Mark and gave him an IQ of 200. The average child of Mark's age has an IQ of 100. At 200, Mark is a genius-even compared with other child geniuses.

"With children like Mark you can tell that's a bright child as soon as they walk in. They just have this sort of intensity, and maybe they're not so good at communicating with people," the psychologist said. "He will never fit perfectly into a class where he's with children of his age.”But Mark's mother worries about the "socially isolated" labels. "Nobody wants their child to grow up with that image. I want him to communicate with others freely, but not to be frustrated academically, so it's really hard to find a balance," she says.

Helen Dudeney from the Talented and Gifted Children Association says Mark is one in a million with such a high IQ. She points out that geniuses are still rare and difficult for the public education system to handle. "The lack of coping comes because teachers aren't trained in teaching gifted children," says Dudeney.

Helen believes it's also extremely important for them to be recognized and supported in their talents. Mark's parents are trying to figure out how best to help Mark. At the moment, there are few options. Mark finds first year work boring and simple, but he must learn to complete the work. His mother says, "We just want to be happy. Just to have a happy childhood and want to go to school every day.”

1.By saying "But his intelligence comes at a cost. ",the author means that        

2.Which of the following is NOT true according to the passage?      

3.If there are 6. 6 billion people in the world, the number of geniuses with an IQ of 200 will be

________．

4.What would be the best title for the passage?        

Little Mark is only 6, but he has an IQ of 200, a genius among geniuses. But his intelligence comes at a cost. His parents must keep him intellectually simulated（启发）while making sure he is like any other little boy.
Mark has been attracted by the way how the world works since he was a baby. When he was 3, Mark was reading fluently, mostly self-taught. His parents haven't been able to keep him away from books since.
"I tried many times to stop him reading. We worry about his crazy fond of reading because he constantly wants to read every-thing whatever it is.”
A psychologist at the Centre for gifted children tested Mark and gave him an IQ of 200. The average child of Mark's age has an IQ of 100. At 200, Mark is a genius-even compared with other child geniuses.
"With children like Mark you can tell that's a bright child as soon as they walk in. They just have this sort of intensity, and maybe they're not so good at communicating with people," the psychologist said. "He will never fit perfectly into a class where he's with children of his age.”But Mark's mother worries about the "socially isolated" labels. "Nobody wants their child to grow up with that image. I want him to communicate with others freely, but not to be frustrated academically, so it's really hard to find a balance," she says.
Helen Dudeney from the Talented and Gifted Children Association says Mark is one in a million with such a high IQ. She points out that geniuses are still rare and difficult for the public education system to handle. "The lack of coping comes because teachers aren't trained in teaching gifted children," says Dudeney.
Helen believes it's also extremely important for them to be recognized and supported in their talents. Mark's parents are trying to figure out how best to help Mark. At the moment, there are few options. Mark finds first year work boring and simple, but he must learn to complete the work. His mother says, "We just want to be happy. Just to have a happy childhood and want to go to school every day.”
【小题1】By saying "But his intelligence comes at a cost. ",the author means that        

Little Mark is only 6, but he has an IQ of 200, a genius among geniuses. But his intelligence comes at a cost. His parents must keep him intellectually simulated（启发）while making sure he is like any other little boy.
Mark has been attracted by the way how the world works since he was a baby. When he was 3, Mark was reading fluently, mostly self-taught. His parents haven't been able to keep him away from books since.
"I tried many times to stop him reading. We worry about his crazy fond of reading because he constantly wants to read every-thing whatever it is.”
A psychologist at the Centre for gifted children tested Mark and gave him an IQ of 200. The average child of Mark's age has an IQ of 100. At 200, Mark is a genius-even compared with other child geniuses.
"With children like Mark you can tell that's a bright child as soon as they walk in. They just have this sort of intensity, and maybe they're not so good at communicating with people," the psychologist said. "He will never fit perfectly into a class where he's with children of his age.”
But Mark's mother worries about the "socially isolated" labels. "Nobody wants their child to grow up with that image. I want him to communicate with others freely, but not to be frustrated academically, so it's really hard to find a balance," she says.
Helen Dudeney from the Talented and Gifted Children Association says Mark is one in a million with such a high IQ. She points out that geniuses are still rare and difficult for the public education system to handle. "The lack of coping comes because teachers aren't trained in teaching gifted children," says Dudeney.
Helen believes it's also extremely important for them to be recognized and supported in their talents. Mark's parents are trying to figure out how best to help Mark. At the moment, there are few options. Mark finds first year work boring and simple, but he must learn to complete the work. His mother says, "We just want to be happy. Just to have a happy childhood and want to go to school every day.”
【小题1】By saying "But his intelligence comes at a cost. ",the author means that