_______ the secret of nature, the young scien...

_______ the secret of nature, the young scientist has little time for entertainment.

A. Devoted to bring out　　　　   B. Devoted himself to bringing out　

C. Devoted to bringing out　　   D. Devoting to bring out

高二英语单项填空中等难度题查看答案及解析

_______ the secret of nature, the young scientist has little time for entertainment.

A. Devoted to bring out                     B. Devoted himself to bringing out

C. Devoted to bringing out                  D. Devoting to bring out

高二英语单项填空简单题查看答案及解析

_______ the secret of nature, the young scientist has little time for entertainment.

A．Devoted to bring out                     B．Devoted himself to bringing out

C．Devoted to bringing out                  D．Devoting to bring out

高二英语单项填空中等难度题查看答案及解析

Forget drinking countless glasses of water or getting your beauty sleep．The secret of looking young is simply to stay out of the sun．

A study of hundreds of women has revealed that those who avoided the sun’s rays looked up to 20 years younger than they actually are. However, other supposed rules for a youthful complexion, from drinking lots of water to sleeping well and exercising regularly, failed to hold back the hands of time.

Only keeping out of the sun, and wearing sunscreen when this wasn’t possible, made a difference, the American Academy of Dermatology’s annual conference will hear today.

The finding comes from a study of 231 women of all ages who were quizzed about their lives, including whether they were sun-loves. When researchers from Massachusetts General Hospital in the US guessed how old the women were, they found those who took care in the sun tended to have aged more slowly.

Four lucky women had so few wrinkles and age spots and such a glowing complexion，that they appeared to be twenty years younger than they really were．

Researcher Dr．Alexa Kimball said the popular belief that we drink lots of water to stay healthy is false and the body is “pretty good” at judging how much we need．Previous research by the British Nutrition Foundation reached a similar conclusion．

It isn’t clear why the women who slept well didn’t have younger-looking skin．But it may be that the question they were asked was too narrow and didn’t consider their long-term sleep patterns．

1.Which way can help women stay younger according to the study?

A. Having a good sleep． B. Drinking plenty of water．

C. Taking exercise regularly． D. Keeping out of the sun．

2.How did the researchers know the finding about women of all ages?

A. Through calls． B. Through games．

C. By quizzes． D. By interviewing face to face．

3.What’s the main purpose of the passage?

A. To introduce a good way to make women look younger．

B. To explain how scientists carried out the research．

C. To prove people’s previous ideas are true．

D. To persuade women to change their long-term sleep patterns．

4.This passage is most probably taken from______________．

A. a school textbook． B. a science fiction．

C. a reference book． D. a science paper．

高二英语阅读理解中等难度题查看答案及解析

For years scientists have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.

Indoor air pollution can cause a person to feel tired, to suffer eye pain, headache and other problems. Some pollutants（污染物）can cause breathing disorders, diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution.

People have paid more attention to the problem now. It is true that when builders began making houses and offices they did not waste energy. To do this they build buildings that limited the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to let out harmful gases.

As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building—green plants. Scientists do not really know how plants control air pollution. They believe that a plant’s leaves absorb（吸收）or take in the pollutants. In exchange the plant lets out oxygen through its leaves and tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and healthier place.

1.Generally speaking, indoor air pollution may be more harmful than the air outside because 　　　　 .

A．indoor air pollution can often make people seriously ill

B．man-made building materials give off dangerous gases

C．there may be more harmful gases outside the buildings

D．the air indoors is polluted, which is very harmful

2.Some kind of indoor pollution can be found in 　　　　 .

A．every modern house B．every old house

C．all kinds of houses 　　 D．all kinds of offices

3.The indoor air pollution is caused by 　　　　 .

A．the limit of the flow of air between inside and outside

B．the building way that the builders want to save energy

C．the building things that are made of man-made materials

D．the man-made building materials and the limit of air-flow

4.The reason why we should use different kinds of plants to clean the air is that

A．plants can let out all kinds of pollutants indoors

B．plants may take in more oxygen （氧气）which people need

C．plants can absorb all kinds of harmful indoor chemicals

D．plants can make our houses prettier and more healthy

高二英语阅读理解中等难度题查看答案及解析

For years scientists have been worrying about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.

Indoor air pollution can cause a person to feel tired, to suffer eye pain, headache and other problems. Some pollutants can cause breathing disorders, diseases of blood and even cancer, Most scientists agree that every modern house has some kind of indoor pollution.

People have paid more attention to the problem now. It is true that when builders began making houses and offices they did not waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to let out harmful gases.

As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building—green plants. Scientists do not really know how plants control air pollution. They believe that a plant’s leaves absorb or take in the pollutants. In exchange the plant lets out oxygen through its leaves and through its tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square metres of space. Studies of different plants show that each absorbs different chemicals.

So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and more healthy place.

1.Generally speaking, indoor air pollution may be more harmful than the air outside because ________.

A．indoor air pollution can make a person seriously ill

B．man - made building materials give off dangerous gases

C．there may be more harmful gases outside the buildings

D．the air indoors is polluted, which is very harmful

2.Some kind of indoor pollution can be found in ________

A. every modern house

B. every old house

C. all kinds of houses

D all kinds of offices

3. The indoor air pollution is caused by ______

A. the limit of the flow of air between inside and outside

B. the building way that the builders want to save energy

C. the building things that are made of man-made materials

D. the man-made building materials and the limit of airflow

4.The reason why we should use different kinds of plants to clean the air is that _______

A. plants can let out all kinds of pollutants indoors

B. plants may take in more oxygen which people need

C. plants can absorb all kinds of harmful indoor chemicals

D. plants can make our houses prettier and more healthy

高二英语阅读理解中等难度题查看答案及解析

For years scientists have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.

Indoor air pollution can cause a person to feel tired, to suffer eye pain, headache and other problems. Some pollutants can cause breathing disorders, diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution.

People have paid more attention to the problem now. It is true that when builders began making houses and offices they did not waste energy. To do this they build buildings that limited the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to let out harmful gases.

As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building—green plants. Scientists do not really know how plants control air pollution. They believe that a plant’s leaves absorb or take in the pollutants. In exchange the plant lets out oxygen through its leaves and tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and more healthy place.

1.Generally speaking, indoor air pollution may be more harmful than the air outside because ______.

A．indoor air pollution can often make people seriously ill

B．man-made building materials give off dangerous gases

C．there may be more harmful gases outside the buildings

D．the air indoors is polluted, which is very harmful

2.Some kind of indoor pollution can be found　in______．

Ａ．every modern house　         B．every old house

C．all kinds of houses           D．all kinds of offices

3.The indoor air pollution is caused by ______.

A．the limit of the flow of air between inside and outside

B．the building way that the builders want to save energy

C．the building things that are made of man-made materials

D．the man-made building materials and the limit of air-flow

4.The reason why we should use different kinds of plants to clean the air is that ______.

A．plants can let out all kinds of pollutants indoors

B．plants may take in more oxygen which people need

C．plants can absorb all kinds of harmful indoor chemicals

D．plants can make our houses prettier and more healthy

高二英语阅读理解中等难度题查看答案及解析

For years scientists have been worried about the effects of air pollution on the earth's natural conditions. Some believe the air inside many houses may be more dangerous than the air outside.

Most scientists agree that every modern house has some kind of indoor pollution. People began to notice the problem in the early 1970s. When builders began making houses and offices, they did not want to waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also used man－made building materials which are now known to let out harmful gases.

As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building green plants.

Scientists believe that a plant's leaves absorb the pollutants (污染物). In exchange the plant lets out oxygen through its leaves. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants.

1.Indoor air pollution may be more dangerous than the air outside mainly because 　　　　 .

A. the building are too high

B. the flow of air indoor is limited

C. the building materials are harmful

D. people don't want to waste energy

2.Some kind of indoor pollution can be found in 　　　　 .

A. all kinds of offices B. all kinds of houses

C. every modern house 　 D. every old house

3.In the last paragraph the word“ absorb” may mean 　　　　 .

A. take in B. bring up C. give out D. turn into

4.Scientists believe that plants can　　　　 .

A. change oxygen into pollutants

B. absorb all the pollutants

C. make your houses more prettier

D. absorb pollutions and let out oxygen

5.According to the last paragraph, we should 　　　　 to clean the air.

A. plant all kinds of plant

B. plant more trees.

C. have the same kind of plant

D. have different kinds of plants

高二英语阅读理解中等难度题查看答案及解析

Deborah Cohen is a senior natural scientist at the Rand Corp and the author of the book A Big Fat Crisis: The Hidden Forces Behind the Obesity Epidemic and How We Can End It. According to the book, there are lots of misunderstandings of obesity.

1. If you’re obese, blame your genes.

Obesity rates have increased. Yet, between 1980 and 2000, the number of Americans who are obese has doubled—too quickly for genetic factors to be responsible.

At restaurants, a dollar puts more calories on our plates than ever before, because restaurant meals usually have more calories than what we prepare at home, so people who eat out more frequently have higher rates of obesity than those who eat out less.

2. If you’re obese, you lack self-control.

Research shows that if we are faced with too much information, we have a tendency to make poor dietary choices. Our world has become so rich in temptation that we can be led to consume too much in ways we can’t understand. Even the most vigilant(警觉的) people may not be up to the task of controlling themselves.

3. Lack of access to fresh fruits and vegetables is responsible for obesity.

Although the US Department of Agriculture estimates that fewer than 5 percent of Americans live in the “food deserts”, about 65 percent of the nation’s population is overweight or obese. For most of us, obesity is not related to access to more fresh fruits and vegetables, but to the choices we make in supermarkets.

4. The problem is not that we eat too much, but that we don’t exercise.

Michelle Obama’s “Let’s Move” campaign is based on the idea that if kids exercise more, childhood obesity rates will decrease. But there was no significant decrease in physical activity levels as obesity rates climbed in the 1980s and 1990s. In fact, although a drop in work-related physical activity may account for up to 100 fewer calories burned, leisure physical activity appears to have increased. The problem is that we eat too much.

1.The author mentioned Deborah Cohen’s book in Paragraph 1 to _______.

A. introduce the topic

B. draw readers’ attention

C. introduce the author of the book

D. advertise the book

2.What is the relationship between obesity and the place where you eat?

A. The less you eat out, the higher rates of obesity you have.

B. The less you eat at home, the lower rates of obesity you have.

C. The more you eat out, the higher rates of obesity you have.

D. The more you eat at home, the higher rates of obesity you have.

3.What’s the best title of this passage?

A. Four misunderstandings of obesity.

B. Four rules to help you avoid obesity.

C. Obesity leads to a big fat crisis.

D. Lacking self-control leads to obesity.

高二英语阅读理解中等难度题查看答案及解析

The young scientist has made such great achievements in his chosen field ______ nobody else can make.

高二英语单项填空中等难度题查看答案及解析