All the scientific evidence ______ that incre...

All the scientific evidence ______ that increasing use of chemicals in farming______damaging our health．

A．show; are　　　　 B．shows; are

C．show; is　　　　 D．shows; is

高三英语单项填空中等难度题查看答案及解析

All the scientific evidence ______ that increasing use of chemicals in farming______ damaging our health.

A. show; are B. shows; are

C. show; is D. shows; is

高三英语单项填空中等难度题查看答案及解析

All the scientific evidence ________ that increasing use of chemicals in farming ________ damaging our health.            　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 (2012·湖南，35)

A．show；are　                     B．shows；are

C．show；is　                     D．shows；is

高三英语单项填空中等难度题查看答案及解析

All the scientific evidence ________ that increasing use of chemicals in farming ________ damaging our health.(2012·湖南)

A．show；are　 B．shows；are

C．show；is　 D．shows；is

高三英语单项填空中等难度题查看答案及解析

A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.

Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma(黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.

Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence(发生率)faster than any other cancer in the United States.

But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.

The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer—people with fair skin and freckles(雀斑), for example—are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.

The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.

1.The underlined word “flaws” in the 2nd paragraph most probably means 　　　　 .

A. evidences        B. facts        C. faults        　　 D. failures

2.People with fair skin and freckles 　　　　　 .

A. seldom use sunscreen            　　　　

B. are more in danger of skin cancer

C. can be free from the harm of the sun    　

D. often expose themselves to the sun

3.We can learn from the passage that 　　　　　 .

A. sunscreen users get skin cancer more often

B. the volunteers have proved the effect of sunscreen

C. the new study was based on the experiences of volunteers

D. the number of skin cancer patients is increasing in America

4.Which of the following can be the best title for this passage?

A. Sunscreen to Prevent Skin Cancer    　　

B. Sunscreen to Increase Skin Cancer

C. Skin Cancer Caused by Sunscreen    　　

D. Skin Cancer Caused by Freckles

高三英语阅读理解中等难度题查看答案及解析

A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin caner, actually increases the risk.

Researchers from the University of lows based their firdings on a review of 18 earlier studies that looked at the associstion between sunscreen use and melanoms(黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.

Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helpsprevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.

But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.

The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin concer—people with fair skin and freckles （雀斑）,for example—are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.

The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.

1.The underlined word “flaws” in the 2^nd paragraph most probably means ________.

A.evidences     B.facts     C.faults        D.failures

2.People with fair skin and freckles ________.

A.seldom use sunscreen                  B. are more in danger of skin concer

C. can be free from the harm of the sun     D. often expose themselves to the sun

3.We can learn from the passage that ________.

A. sunscreen users get skin cancer more often

B. the volunteers have proved the effect of sunscreen

C. the new study was based on the experiences of volunteers

D. the number of skin cancer patients is increasing in America

4.Which of the following can be the beat title for this passage?

A. Sunscreen to Prevent Skin Cancer         B. Sunscreen to Increase Skin Cancer

C. Skin Cancer Caused by Sunscreen          D. Skin Cancer Caused by Freckles

高三英语阅读理解中等难度题查看答案及解析

Clinical evidence began to ______,suggesting that the new drugs had a wider range of useful activities than had been predicted from experiments in animals.

A. operate　　　　　 B. strengthen

C. approve　　　　 D. accumulate

高三英语单项填空中等难度题查看答案及解析

A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.

Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤)．They said that they found faults in studies that had reported associations between sunscreen use and higher risk of melanoma.

Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.

But questions has been raised about sunscreen and whether it may has opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.

The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer--- people with fair skin and freckles (雀斑), for example--- are more likely to use sunscreen．As a result, it may appear that sunscreen users get cancer more often.

The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.

1.People with fair skin and freckles________.

2.We can learn from the passage that________.

3.Which of the following can be the best title for this passage?

高三英语阅读理解中等难度题查看答案及解析

Clinical evidence began to__________, suggesting that the new drugs had a wider range of useful activities than had been predicted from experiments in animals.

A. operate          B. straighter         C. approve         D. accumulate

高三英语单项填空中等难度题查看答案及解析

Reading is good for you. There is increasing evidence to show that reading isn’t merely a way of improving literacy and knowledge, but that it might actually be good for one’s mental and physical health, too.

In the age of Twitter and short attention spans, reading novels, which requires intense concentration over a long period of time, could be the antidote(矫正方法).

Neuroscientists Baroness Susan Greenfield says that reading helps to lengthen attention spans in children and improve their ability to think clearly. “Stories have a structure that encourages our brain to think in sequence, to link cause, effect and significance,” she says “It is essential to learn this skill as a small child.”

“In a computer game, you might rescue a princess, but you don’t care about her, you just want to win,” she explains, “But a princess in a book has a past, present and future. You can relate to her. You see the world through her eyes”

According to professor John Stein, Oxford university, reading is far from a passive activity. “Reading exercises the whole brain,” he explains. “ When we get lost in a good book, we are doing more than following a story, Imaging what is happening is as good as activating the brain as doing it. In other words, our brains simulate(模仿) real experiences, and it is just as if we were experiencing them ourselves. This doesn’t happen when we are watching a TV or playing computer games.”

Getting stuck in a good novel appears to be good for one’s mental health. Reading helps one not only fights loneliness, but also forget one’s own problems for a while.

Researchers found that just six minutes of reading could reduce stress levels by more than two-thirds, more than listening to music or going out for a walk. The concentration required to read distracts the mind, easing muscle’s tension and slowing the heart rate. Reading may be good for physical health, too, by preventing brain aging and disease.

1.Which of the following statement is true about playing computer games?

A. It encourages our brains to think clearly

B. It makes people feel lonely

C. It makes the player concentrate on the result instead of the role in it

D. It can help lengthen one’s attention span.

2.According to John Stein, reading _______

A. is simply following a story

B. is a passive activity

C. can active the brain

D. has the same results as watching TV

3.What is the main purpose of this passage?

A. To show how to improve children’s attention spans

B. To encourage people to read

C. To show that Twitter has a negative influence

D. To compare the results of reading and watching TV

4.The last two paragraphs are mainly about

A. the mental and physical benefits of reading

B. ways of getting rid of stress

C. the problems we face in daily life

D. the factors that cause people to feel lonely

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

A. Reading Books Helps Keep Your Healthy

B. The Structure of a Book

C. The Brain Activities While Reading

D. How to Teach Children to Read

高三英语阅读理解困难题查看答案及解析