According to The Sun, British scientists have...

According to The Sun, British scientists have solved the ancient riddle of ________ came first—chicken or egg?

A. who　　 B. what

C. which　　 D. that

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British scientists seeking to protect the environment have designed a biodegradable mobile phone cover that breaks down in soil when discarded and sprouts (发芽)a flower from a seed put inside the case. Researchers at the University of Warwick in central England said the novel device, made from a specially designed polymer (聚合材料),is a blessing for the environmentalists.

Millions of mobile phones are thrown away every year as the industry produces large quantities of new models without caring about the quality. “It is really original in the phone industry and consumers are happy because they feel they are doing something for the local environment,” said Keny Kirwan from the university of Warwick. Designers have made the hesitant users feel sure that the seed, put into a transparent window, only sprouts when the phone cover is discarded. “We put sunflower seeds into the covers of the samples, but we are working with gardening researchers to identify which other flowers would perform best. Maybe we could put poppies (虞美人)or roses next time,” said Kirwan.

1.Why is the new mobile phone unique?

A.It is popular with young people.

B.It is environmentally friendly.

C.The user can make it flower whenever he or she likes.

D.Its colour is beautiful.

2.What does the underlined word “ discarded” mean?

A.Thrown away. B.Updated. C.Cleaned. D.Replaced.

3.What can be a suitable title for the text?

A.Good News for Environmentalists B.Promising Mobile Phone

C.Changing Wastes into Valuables D.Flowering Mobile Phone

4.In which section of a magazine may this text appear?

A.Entertainment. B.Science and technology.

C.Education. D.Health.

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A healthy dose of sunshine may be the secret to staying young, British scientists have revealed.

Vitamin D is produced naturally by the skin in response to sunlight and may help to slow the aging process and protect against heart disease, according to the study.

Researchers from King's College London studied 2,160 women aged between 18 and 79, looking at their telomeres - a biological marker of ageing found in DNA. As people get older their telomeres get shorter and they become more susceptible to certain illnesses.

But the study found women with high levels of vitamin D had comparatively longer telomeres - a sign of being biologically younger and healthier.

The study suggests vitamin D may help to slow down the ageing process of DNA, and therefore the ageing process as a whole.

Lead researcher Dr Brent Richards said: "These results are exciting because they demonstrate for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D.

"This could help to explain how vitamin D has a protective effect on many ageing related diseases, such as heart disease and cancer."

He said further studies are required to confirm the findings.

Professor Tim Spector, head of KCL's twin research unit, and a co-author of the report, added: "Although it might sound absurd, it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process."

Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.

Other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.

1.The passage mentions all of the items listed below except_______.

A.   The findings haven’t been confirmed entirely.

B.   People become easily infected with some illnesses when they get older.

C.   Vitamin D obtained through fish, eggs and breakfast cereals accounts for 10 percent of the body’s supply.

D.   The discovery could help explain how vitamin D has a positive effect on cancer.

2.The phrase “demonstrate for” in the 7th paragraph probably means________.

A. claim        B. prove        C. think           D. provide

3.It can be inferred that________.

A. Women with high levels of vitamin D have shorter telomeres.

B. Studies have confirmed the findings.

C. Sunshine may be a cause of the risk of skin cancer.

D. If someone has heart disease, sunshine may help him to relieve the disease.

4.The main idea of the passage is that_________.

A. Vitamin D can help protect against cancer and heart disease.

B. sunshine helps keep you young.

C. what effect vitamin D has on human’s body.

D. high levels of vitamin D make people keep young.

高三英语阅读理解中等难度题查看答案及解析

A healthy dose of sunshine may be the secret to staying young, British scientists have disclosed.

Vitamin D is produced naturally by the skin in response to sunlight and may help to slow the ageing process and protect against heart disease, according to the study.

Researchers from King's College London studied 2,160 women aged between 18 and 79, looking at their telomeres - a biological marker of ageing found in DNA．As people get older, their telomeres get shorter and they are easy to have illnesses.

But the study found women with high levels of vitamin D had comparatively longer telomeres - a sign of being biologically younger and healthier.

The study suggests vitamin D may help to slow down the ageing process of DNA, and therefore the ageing process as a whole.

Lead researcher Dr Brent Richards said: "These results are exciting because they prove for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D．

"This could help to explain how vitamin D has a protective effect on many ageing related diseases, such as heart disease and cancer."

He said further studies are required to confirm the findings.

Professor Tim Spector, head of KCL's twin research unit, and a co-author of the report, added: "Although it might sound absurd(荒谬的), it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process."

Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.

Other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.

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

A.Sunshine helps to keep you young.

B.Vitamin D has a protective effect on many diseases.

C.Telomeres - a biological marker of ageing.

D.People have found the secret to having a long life.

2.How can people get Vitamin D?

A.through water.       B. through sunshine.

C.through food.        D.both B and C.

3.Which of the following is not true according to the passage?

A.women with high levels of vitamin D shows a sign of being biologically younger and healthier.

B.vitamin D has a protective effect on many ageing related diseases.

C.too much sunshine may increase our risk of skin cancer.

D.It has been proved that sunshine helps to keep you young.

高三英语阅读理解中等难度题查看答案及解析

Scientists have solved the mystery of why the overwhelming majority of mammoth fossils(化石)are male.

Much like wild elephants today, young male Ice Age mammoths probably travelled around alone and more often got themselves into risky situations where they were swept into rivers, or fell through ice or into mud, lakes or sinkholes that preserved their bones for thousands of years, scientists say.

Females, on the other hand, travelled in groups led by an older matriarch who knew the landscape and directed her group away from danger.

"Without the benefit of living in a herd led by an experienced female, male mammoths had a much higher risk of dying in natural traps such as mud holes, rock cracks and lakes, "said co-author Love Dalen of the Swedish Museum of Natural History in a report published on Thursday in the journal Current Biology.

The study used genetic data to determine the sex of 98 woolly mammoth fossils in Siberia Researchers found that 69% of the samples were male, a heavily unbalanced sex ratio, assuming that the sexes were fairly even at birth.

"We were very surprised because there was no reason to expect a sex bias in the fossil record," said first author Patricia Pecnerova, also of the Swedish Museum of Natural History. Therefore, researchers believe that something about the way they lived influenced the way they died.Most bones, tusks, and teeth from mammoths and other Ice Age animals haven't survived," explained Dalen.

"It is highly likely that the remains that are found in Siberia these days have been preserved because they have been buried, and thus protected from weathering."

These giant, tusked plant eaters disappeared about 4,000 years ago. While there is no scientific agreement about the causes of their disappearance from the planet, most believe that climate change, excessive hunting by humans and the spread of other animals into mammoth feeding grounds were influential factors.

1.The underlined word "matriarch" in paragraph 3 means _______.

A. figure head　　 B. female leader

C. experienced animal　　 D. mature mammoth

2.Why do the majority of mammoth fossils come from male animals?

A. Scientists find it easier to study male fossilized bones.

B. There were more male mammoths in comparison to females

C. Male mammoths were better able to adapt to the changing circumstances.

D. Male mammoths more frequently died in places where fossils could form.

3.Which of the following is suggested as a reason for mammoths dying out?

A. The increasing competition for food.

B. The cooling of the earth's temperature.

C. The disappearance of male mammoths.

D. The risky behaviour of younger mammoths.

4.What is the text type of the passage?

A. A newspaper article.　　 B. An academic essay.

C. A historical description.　　 D. A science fiction story.

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From facts, scientists have_______ that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.

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Why do people like what they like? Scientists have taken on the task of solving this mystery(奥秘)for ages. In the 1960s, psychologist Robert Zajonc conducted a series of experiments where he showed people nonsense words and random shapes. Afterward he asked his subjects which they preferred out of ever thing they had been shown. In study

after study, people always chose the words and shapes they had seen the most. Their preference was for familiarity.

This discovery was one of the most important findings in modern psychology. But the preference for familiarity has clear limits. People get tired of even their favorite songs and movies. On one hand, humans seek familiarity, because it makes then feel safe. On the other hand, people love the thrill of something new. This change between familiarity and discovery affects ns all the time- not just our preferences for pictures and songs, but also our preferences for ideas and even people.

For that reason, the power of familiarity seems to be strongest when a person isn’t expecting it. The opposite is also true: A surprise seems to work best when it contains some familiarity. Nobody knows this better than Raymond Loews, who is considered to be the "father of industrial design. He had a theory that he said could help artists sell anything to anyone. He called it MAYA --"Most Advanced Yet Acceptable""To sell something surprising, make it familiar; and to sell something familiar, make it surprising," he said.

One of Loewy’s final tasks was too add an element(要素)of familiarity to a truly new invention: NASA’s first space station. Loewy’s biggest contribution to the space station was that he insisted NASA install a window with a view of Earth. Today, tens of millions of people have seen this small detail in films about astronauts. It is hard to imagine a more perfect example of MAYA: a window to a new world can also show you home.

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British scientists have produced _____ they believe is the world's smallest Christmas card．

高三英语单项填空中等难度题查看答案及解析

From facts, scientists have ________that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.

高三英语单项填空中等难度题查看答案及解析

On October 12,1989，some British scientists were working at the computers to look for the information they needed.Suddenly they saw a lot of very bright points crossing the computer screens.At the same time the computers were working much slower.To find out what was happening they stopped their work to check some parts of the computers.To their horror，they found out that most of their stored information was got rid of by computer viruses(病毒)！Clearly all these computers had been infected by computer viruses.

It is said that the computer viruses were made by a group of young men fond of playing tricks.They all had excellent education.They created the viruses just to show their intelligence. These kinds of computer viruses are named Jerusalem Viruses.These viruses can stay in computers for a long time.When the time comes they will attack(袭击)the computers by lowering the functions，damaging their normal programs or even getting rid of all the information.

We now come to know that Jerusalem Viruses often attack computers on Friday and that they are spreading(传播)to a lot of computers.Among the countries that were attacked by computer viruses last year are Britain，Australia，Switzerland and the U．S.But till now，how to get rid of the terrible viruses remains a problem.

1.When the viruses attack the computers，the computers will work________.

A．normally　 B．slowly　 C．faster　 D．well

2.The group of young men created the viruses to________.

A. damage the computers　　

B. test their ability

C. tell people that they were intelligent　

D. play a trick on users of the computers

3.According to the passage，computer viruses seem to ________.

A. have been in nature for years

B. stay in any computers

C. be difficult to get rid of at present

D. be able to be got rid of in the near future

4.According to the passage，which of the following is TRUE?

A. Last year six countries found their computers were infected by viruses.

B. The viruses will come to a new computer after staying in the old one for some time.

C. Scientists are trying to find a way to get rid of the viruses.

D. The Jerusalem Viruses are dangerous to human health.

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