题目内容

______ that after the ash covered the people who failed to flee the city, their bodies nearly completely______ and disappeared,_________ empty spaces in the ash.

A. It turned out ;broke down; leaving

B. As turned out; broke up; which left

C. It turned out; broke off; leaving

D. What was turned out was ;broke down; left

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Chimpanzees,long considered reluctant to share,apparently can display selfless tendencies,revealing one more key way our closest living relatives are like humans,scientists find. These findings could shed light on the evolution of altruism in humans.

Previously,a belief was widely held that human altruism evolved only after humans split from their ape cousins about 6 million years ago.In recent years,however,research has revealed just how much chimpanzees have in common with us.They can hunt with spears,play with dolls and mourn their partners'death.

“Most of the earlier studies had presented the apes with a complex implement that helped them deliver food to themselves or others,often so complicated that the experiments tested tool skills rather than social tendencies,”De Waal told Live Science.“Ours is the first study that uses no such implement at all.”

In addition to using complex food-delivery systems,past experiments often placed the chimpanzees so far apart that they might not have realized how their actions benefited others.In these new,simplified experiments,two apes were housed next to each other with a screen through which they could see each other.Then,one chimpanzee had to choose between two differently colored tokens (币) from a bin,one of which represented a pro-social (亲社会的) option,the other a selfish option.The pro-social option would cause both chimpanzees to receive a piece of banana wrapped in paper.The selfish option only rewarded the ape who made the choice.

In a study with seven adult female chimps placed into various pairs,the scientists found all the apes showed a definite preference for the pro-social option.“For me,the most important finding is that like us,chimpanzees take into account the needs and wishes of others,”researcher Victoria Horner,said.

The chimpanzees behaved especially altruistically toward partners who either patiently waited or gently reminded them that they were there by drawing attention to themselves.They were less likely to reward partners who pressured through making a fuss,begging persistently or spitting water at them.This is opposite to a long-standing view that the chimpanzees only share food under pressure.

1.The word“ altruism” (paragraph 1) is closest in meaning to ______.

A. selfishness

B. selflessness

C. willingness

D. reluctance

2.Recent researches are performed with less complicated implements mainly to ______.

A. show that chimps are only good at using implements

B. see whether chimps are willing to share food with others

C. find out if chimps are likely to reward partners

D. test chimps’ social tendencies instead of tool skills

3.Which of the following might be the best title of the passage?

A. Evolution History of Altruism in Humans

B. Similarities between Chimps and Mankind

C. Chimps Do Show Selfless Behavior

D. Chimps Only Share Food under Pressure

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(注意:如果选E,请涂AB;选F,涂AC;选G,涂AD)

There’s no doubt that when it comes to friendship,you want positive people in your life and not negatives ones. 1.

Support when you need it·

With positive friends,you don’t need to beg for help when you need it because chances are they will be there for you without asking. 2.

Health benefits of being positive.

The more positive friends you have,the better you will be at remaining optimistic yourself. 3. For example,it helps people to deal with stress and illness better.Health benefits may include lower rates of depression,a greater ability to throw off colds,and a reduced risk of developing disease.

Bring out the best in you.

4. This means trying new things,achieving goals,and having the kind of life you dreamed of for yourself.With positive people in your life,you’11 feel more comfortable sharing your goals because your friends will give you the emotional push you need to go after what you want in life.

Attracting More Positive Friends

You naturally attract the kinds of friends who are most like you.So if you’re a downer,you’11 probably find that negative people flock to you. 5. The more you are able to maintain a positive attitude,the more likeminded people you’11 attract in return.

A.Here are some benefits of spending time with positive friends.

B.That’s why you’d better surround yourself with positive friends.

C. In most cases,they will go out of their way to help you when you’re in trouble.

D. The same is true for being positive.

E.As we all know,there are many benefits of being optimistic.

F.Your positive friends will inspire you to be the best you can be.

G.Most of the time,you have to ask them to help you when in trouble.

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