Experts warn that medical waste from hospital...

Experts warn that medical waste from hospitals, if 　　　　 properly, may contribute to spreading diseases.

A. not handled

B. not being handled

C. not to be handled

D. not having been handled

高三英语单项填空简单题查看答案及解析

Experts warn that medical waste from hospitals, if　　　　 properly, may contribute to spreading diseases．

A．not handled        B．not being handled

C．not to be handled        D．not having been handled

高三英语单项填空简单题查看答案及解析

Experts warn that medical waste from hospitals, if　　　　 properly, may contribute to spreading diseases．

A．not handled 　　　　 B．not being handled

C．not to be handled　 D．not having been handled

高三英语单项填空中等难度题查看答案及解析

Experts warn that medical waste from hospitals, if 　　　　 properly, may contribute to spreading diseases.

A. not handled        　　　　　 B. not being handled

C. not to be handled        D. not having been handled

高三英语单项填空中等难度题查看答案及解析

Experts warn that medical waste from hospitals, if 　　 properly, may lead to spreading diseases.

A. not handled　　 B. not being handled

C. not to be handled　　 D. not having handled

高三英语单项填空困难题查看答案及解析

—If he       , he      that food.

—Luckily he was sent to the hospital immediately.

A．was warned, would not take                       B．had been ,warned, would not have taken

C．would be warned, had not taken                D．would have been warned, had not taken

高三英语单项填空简单题查看答案及解析

LONDON----Here’s a new warning from health experts: Sitting is deadly.

Scientists are increasingly warning that sitting for prolonged periods — even if you also exercise regularly — could be bad for your health. And it doesn’t matter where the sitting takes place — at the office, at school, in the car or before a computer or TV — just the overall number of hours it occurs. Several studies suggest people who spend most of their days sitting are more likely to be fat, have a heart attack or even die.

　In an editorial published this week in the British Journal of Sports Medicine, Elin EkblomBak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting.

　While health officials have issued guidelines recommending minimum amounts of physical activity, they haven’t suggested people try to limit how much time they spend in a seated position.

　"After four hours of sitting, the body starts to send harmful signals," Ekblom-Bak said. She explained that genes regulating(调节) the amount of glucose（葡萄糖） and fat in the body start to shut down.

　Even for people who exercise, spending long periods of time sitting at a desk is still harmful. Tim Armstrong, a physical activity expert at the World Health Organization, said people who exercise every day — but still spend a lot of time sitting — might get more benefit if that exercise were spread across the day, rather than in a single bout.（一回）

　Still, in a study published last year that tracked more than 17,000 Canadians for about a dozen years, researchers found people who sat more had a higher death risk, independently of whether or not they exercised.

　"We don’t have enough evidence yet to say how much sitting is bad," said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge, who led the Canadian study. "But it seems the more you can get up and interrupt this sedentary behavior, the better."

　Figures from a U.S. survey in 2003-2004 found Americans spend more than half their time sitting, from working at their desks to sitting in cars.

　Experts said more research is needed to figure out just how much sitting is dangerous, and what might be possible to offset those effects.

　"People should keep exercising because that has a lot of benefits," Ekblom-Bak said. "But when they’re in the office, they should try to interrupt sitting as often as possible," she said.

1.What is the best title for the text?

A. Not Sitting Too Much While Working      B. How To Avoid Sitting Too Much

C. Sitting Too Much Could Be Deadly          D. More And More People Sit Too Much

2.According to the research,______________.

A. the more time you spend in exercising in a single bout, the healthier you will be.

B. those who often sit too much are sure to grow fat or suffer from a heart attack.

C. regular exercise is effective to get rid of the side effect of sitting too much.

D. you had better not sit for more than four hours in a single bout.

3.How does the danger of sitting too much affect the human body?

A. It results in a higher death risk.

B. It increases glucose and fat in the body.

C. It makes a person unable to exercise long enough in a day.

D. It causes the gene to fail to balance the glucose and fat in the body.

4.In the opinion of Ekblom-Bak, you’d better have a rest in the office by________.

A. sending your friends e-mails

B. having a walk around your office

C. chatting online or playing computer games

D. listening to music with your head on the desk.

高三英语阅读理解困难题查看答案及解析

LONDON—Here’s a new warning from health experts：Sitting is deadly.

Scientists are increasingly warning that sitting for long periods—even if you also exercise regularly—could be bad for your health.And it doesn’t matter where the sitting takes place—at the office，at school，in the car or before a computer or TV—just the overall number of hours it occurs.Several studies suggest people who spend most of their days sitting are more likely to be fat，have a heart attack or even die.

In an editorial published this week in the British Journal of Sports Medicine，Elin Ekblom­Bak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting.

While health officials have issued guidelines recommending minimum amounts of physical activity，they haven’t suggested people try to limit how much time they spend in a seated position.

“After four hours of sitting，the body starts to send harmful signals，”said Ekblom­Bak.She explained that genes regulating(调节) the amount of glucose(葡萄糖) and fat in the body start to shut down.

Even for people who exercise，spending long periods of time sitting at a desk is still harmful.Tim Armstrong，a physical activity expert at the World Health Organization，said people who exercise every day—but still spend a lot of time sitting—might get more benefit if that exercise was spread across the day，rather than in a single bout(一回)．

Still，in a study published in 2009 that tracked more than 17,000 Canadians for about a dozen years，researchers found people who sat more had a higher death risk，whether or not they exercised.

“We don’t have enough evidence yet to say how much sitting is bad，” said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge，who led the Canadian study.“But it seems the more you can get up and interrupt this sedentary behavior，the better.”

Figures from a U．S. survey in 2003­2004 found Americans spend more than half their time sitting，from working at their desks to sitting in cars.

Experts said more research is needed to figure out just how much sitting is dangerous，and what might be possible to offset those effects.

“People should keep exercising because that has a lot of benefits，” Ekblom­Bak said.“But when they’re in the office，they should try to interrupt sitting as often as possible，” she said.

1.What is the best title for the text?

A．Not Sitting Too Much While Working

B．How to Avoid Sitting Too Much

C．Sitting Too Much Could Be Deadly

D．More and More People Sit Too Much

2.According to the research，________.

A．the more time you spend in exercising in a single bout(一回)，the healthier you will be

B．those who often sit too much are sure to grow fat or suffer from a heart attack

C．regular exercise is effective to get rid of the side effects of sitting too much

D．you had better not sit for more than four hours in a single bout

3.How does the danger of sitting too much affect the human body?

A．It results in a higher death risk.

B．It increases glucose and fat in the body.

C．It makes a person unable to exercise long enough in a day.

D．It causes the gene to fail to balance the glucose and fat in the body.

4.The underlined word “offset” in Paragraph 10 most probably means “________”．

A．improve　                         B．avoid

C．ignore　                             D．achieve

高三英语阅读理解中等难度题查看答案及解析

Thousands of persons in Peru are suffering from the disease cholera. Medical experts say it is the first time in their century that cholera has reached the western part of the world. The United States Centers for disease control says the kind of cholera has been spreading throughout the world since 1961. It was discovered that year in Indonesia. Since the first case in Peru, more than sixteen thousand people have been affected and about one hundred have died.

Cholera is caused by polluted food and water. People become infected (传染) when they eat the polluted food or drink the polluted water. If untreated immediately, they may die within hours. Most victims however, can be saved. Treatment includes drugs and replacement of body fluids (液体) directly into the blood.

Medical researchers have developed a vaccine (菌苗) medicines to protect against cholera. But the vaccine is only about 50% effective. And it protects against cholera for only about six months. Medical experts say the best way to fight cholera is to prevent it. They also say people should not eat uncooked food or food that has not been cooked long enough. People who live in areas where cholera has been found should wash their hands before eating and cooking. They should drink only water that has been boiled or made pure with chemicals.

1.The underlined word “Cholera” in the first paragraph means ________.

A. a certain place in Peru

B. a kind of illness which may make people die

C. a certain place in Indonesia

D. a certain medicine to deal with diseases

2.Cholera results from (由于……结果) ________.

A. Peru and Indonesia

B. the different peoples in the world

C. the different areas in the world

D. polluted water and polluted food

3.How to treat the people who have been caught by cholera?

A. By medicines and blood improvement.

B. By eating unpolluted food.

C. By drinking unpolluted water.

D. By taking them to a separated place.

4.The most effective way of avoiding cholera is ________.

A. seeing doctors as soon as possible

B. fighting against it

C. paying attention to the eating and drinking

D. taking vaccine immediately

高三英语阅读理解中等难度题查看答案及解析

Thousands of persons in Peru are suffering from the disease cholera. Medical experts say it is the first time in their century that cholera has reached the western part of the world. The Untied States Centers for disease Control says the kind of cholera has been spreading throughout the world since 1961. It was discovered that year in Indonesia. Since the first case in Peru, more than sixteen thousand people have been affected and about one hundred have died.

Cholera is caused by polluted food and water. People become infected (传染 ) when they eat the polluted food or drink the polluted water. If untreated immediately, they may die within hours. Most victims however , can be saved. treatment includes drugs and replacement of body fluids ( 液体) directly into the blood.

Medical researchers have developed a vaccine ( 菌苗) medicines to protect against cholera. But the vaccine is only about 50% effective. And it protects against cholera for only about six months. Medical experts say the best way to fight cholera is to prevent it. They also say people should not eat uncooked food or food that has not been cooked long enough. People who live in areas where cholera has been found should wash their hands before eating and cooking. They should drink only water that has been boiled or made pure with chemicals.

1.The underlined word Cholera in the first paragraph means____.

A. a certain place in Peru　　 B. a kind of illness which may make people die.

C. a certain place in Indonesia　　 D. A certain medicine to deal with diseases.

2.Cholera results from (由于……结果 ) _____.

A. Peru and Indonesia　　 B. the different peoples in the world

C. the different areas in the world　　 D. polluted water and polluted food

3.How to treat the people who have been caught by cholera? _____.

A. By medicines and blood improvement　　 B. By eating unpolluted food

C. By drinking unpolluted water　　 D. By taking them to a separated place

4.The most effective way of avoiding cholera is ____.

A. seeing doctors as soon as possible

B. fighting against it

C. paying attention to the eating and drinking

D. taking vaccine immediately

高三英语阅读理解中等难度题查看答案及解析