题目内容

【题目】Being sociable looks like a good way to add years to your life. Relationships with family, friends, neighbours, even pets, will all do the trick, but the biggest longevity(长寿)boost seems to come from marriage or an equivalent relationship. The effect was first noted in 1858 by William Farr, who wrote that widows and widowers(鳏夫)were at a much higher risk of dying than their married peers. Studies since then suggest that marriage could add as much as seven years to a man’s life and two to a woman’s. The effect holds for all causes of death, whether illness, accident or self-harm.

Even if the odds are stacked against you(the conditions are not favourable),marriage can more than compensate. Linda Waite of the University of Chicago has found that a married older man with heart disease can expect to live nearly four years longer than an unmarried man with a healthy heart. Likewise, a married man who smokes more than a pack a day is likely to live as long as a divorced man who doesn’t smoke. There’s a flip side, however, as partners are more likely to become ill or die in the couple of years following their spouses; death, and caring for a spouse with mental disorder can leave you with some of the same severe problems. Even so, the odds favour marriage. In a 30-year study of more than 10,000 people, Nicholas Christakis of Harvard Medical School describes how all kinds of social networks have similar effects.

So how does it work? The effects are complex, affected by socio-economic factors, health-service provision, emotional support and other more physiological mechanisms(机制).For example, social contact can boost development of the brain and immune system, leading to better health and less chance of depression later in life. People in supportive relationships may handle stress better. Then there are the psychological benefits of a supportive partner.

A life partner, children and good friends are all recommended if you aim to live to 100.The best social network is still being mapped out, but Christakis says:” People are interconnected, so their health is interconnected.”

1William Farr’s study and other studies show that________.

A.social life provides an effective cure for illness

B.Being sociable helps improve one’s quality of life

C.Women benefit more than men from marriage

D.Marriage contributes a great deal to longevity

2Linda Waite’s studies support the idea that________.

A.older men should quit smoking to stay healthy

B.Marriage can help make up for ill health

C.The married are happier than the unmarried

D.Unmarried people are likely to suffer in later life

3It can be inferred from the context that the “flip side”(Line5,Para2)refers to________.

A.the disadvantages of being married

B.The emotional problems arising from marriage

C.The responsibility of taking care of one’s family

D.The consequence of a broken marriage

4What does the author say about social networks?

A.They have effects similar to those of a marriage.

B.They help develop people’s community spirit.

C.They provide timely support for those in need.

D.They help relieve people of their life’s burden

5What can be inferred from the last paragraph?

A.It’s important that we develop a social network when young.

B.To stay healthy, one should have a proper social network.

C.Getting a divorce means risking a reduced life span.

D.We should share our social networks with each other.

【答案】

1D

2B

3A

4A

5B

【解析】

试题分析:最大的长寿提高好象来自婚姻或一种等价物关系。婚姻既有有利的一面又有不利的一面。社会关系与婚姻有同样的影响。人要想保持健康还要有合适的关系网。

1D细节理解题。根据第一段第二句可知the biggest longevity(长寿)boost seems to come from marriage or an equivalent relationship. 最大的长寿提高好象来自婚姻或一种等价物关系。故选D

2B推理判断题。根据第二段第二句Linda Waite of the University of Chicago has found that a married older man with heart disease can expect to live nearly four years longer than an unmarried man with a healthy heart.故选B

3A词义猜测题。根据上文说的是婚姻的有利的方面,而下文有however可推知下文要说不利的方面。故选A.

4A细节理解题。根据最后一段最后一句The best social network is still being mapped out, but Christakis says:” People are interconnected, 社会关系与婚姻有同样的影响。故选A

5B推理判断题。根据their health is interconnected可以推知人要想保持健康还要有合适的关系网,故选B

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【题目】Green invaders are taking over America. Not invaders from space, but plants! You might not think of plants as dangerous, but in this case they are threatening nature’s delicate food chain.

The invaders are plants brought here from other countries to make gardens and yards look pretty. Ever since people started to arrive on America’s shores, they have carried along trees, flowers, and vegetables from other places. Now there are so many of those plants, they are crowding out the native plants that have lived here since before human settlers arrived.

And that’s a problem, says Dr. Doug Tallamy. He’s insect expert at the University of Delaware. He explains that almost all the plant-eating insects in the United States are specialized, which means they eat only certain plants. Monarch butterfly caterpillars(幼虫),for example, dine on milkweed. If people cut down milkweed and replace it with another plant, the butterflies will not have the food source that they need to survive.

But the trouble doesn’t stop there. When insects can’t get the right plants to eat and they die off, then the birds don’t have enough bugs for their meals. Tallamy points out that almost all migrating birds depend on insets to feed their young.

“We cannot let the plants and animals around us disappear.” says Tallamy, “The way to preserve them is to give them food to eat. But when we plant non-native plants, we are clobbering the food chain, because then we don’t have the insects the birds need to live.”

Fewer of the right plants mean fewer bugs, and fewer bugs mean fewer birds. And that’s bad for the Earth, because we need a variety of living things to keep the planet healthy and beautiful.

The good news is, garden centers sell native plants. “Just Google ‘native plants’ and your location, and you can find out which plants really belong where you live,” says Tallamy

1How did green invades arrive at America?

A.They fell down from space.

B.They floated to the America’s shores.

C.They were brought in from foreign countries

D.They has lived here since human settlers arrived

2According to Dr.Tallamy, which of the followings about the insects in the US is NOT true?

A.Almost all the plant-eating insects in a place eat certain plants.

B.Monarch butterfly caterpillars can’t survive without milkweed.

C.If insects can’t eat the right plants, they will find another one.

D.The insects’ death will greatly affect the migrating birds’ survival

3The underlined word “clobber” in Paragraph 5 is closest in meaning to _________.

A.protect B. damage C. create D. collect

4We can know whether a plant is native by _________.

A.Googling on the Internet B. asking Dr. Doug Tallamy

C. looking up in books D. searching in garden

5What is the best title of the pass age?

A.Green invaders——local living things

B. Green invaders——dangerous food chain

C.Green invaders——environmental protectors

D. Green invades——threat to local nature

【题目】UCLA scientists report for the first time on the only known frog species that can communicate using purely ultrasonic(超声)calls, whose frequencies are too high to be heard by humans. Known as Huia cavitympanum, the frog lives only on the Southeast Asian island of Bomeo(婆罗洲).

Ultrasounds are high-pitched sounds more than 20 kilohertz(kHz) in frequency, which exceeds the upper limit of sounds detectable by humans and is far higher than the 5 to 8 kHz frequencies most amphibians (两栖动物),reptiles and birds are capable of hearing or producing. Key parts of the ear must be specially adapted to detect ultrasounds.

The frogs can hear sounds up to 38 kilohertz, the highest frequency that any amphibian species has been known to hear, the scientists report. Humans can hear up to about 20 kHz and typically talk at 2 or 3 kHz.

While most of the more than 5,000 frog species worldwide have eardrums that are flat on the side of the head, Huia cavitympanum has eardrums recessed in the side of the skull, similar to mammals.

Peter Narins, UCLA distinguished professor of physiological science and of ecology and evolutionary biology, and Victoria Arch, a UCLA graduate student in ecology and evolutionary biology, spent several nights in the remote area where the frogs live.

" We had very little information suggesting that they would be in this location," said Arch, lead author of the study. " We found them our first night out. "

The study was published on April 29 in the online journal PLOS ONE, a publication of the Public Library of Science, and is available at
http://dx. plos. org/10. 1371/journal, pone. 05413.

【1】 Huia cavitympanum mainly live __________.

A. in all over the world

B. in many parts of China

C. only on the Southeast Asian island of Borneo

D. only on the certain countries' marsh

【2】 This kind of new-found frog can hear each other with up to __________ kHz ultrasounds.

A. 2-3 B. 5 -8

C. more than 20 D. 38

【3】 If people can hear ultrasounds as frogs do, they should __________.

A. hear as frogs do carefully

B. have a pair of good enough ears like frogs

C. concentrate their energy on them

D. turn them into common sounds

【4】 According to the passage we can infer that __________.

A. the result of study is concluded not easily

B. some scientists have done a lot of work for the result

C. all the frogs have the ability with 38 kHz frequency

D. this kind of frogs is as important as animals

【5】 This passage probably appears __________.

A. on the newspaper B. on the textbook

C. on the website D. on the report

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