2015上海市十三校第一次联考英语试题及答案(4)

"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.


66. The word " altruism " (paragraph 1) is closest in meaning to ______.
A. selflessness      B. selfishness C. willingness       D. reluctance
67. Recent researches are performed with less complicated implements mainly to ______.
A. test chimps’ social tendencies instead of tool skills 
B. see whether chimps are willing to share food with others 
C. find out if chimps are likely to reward partners
D. show that chimps are only good at using implements  
68. What can be learned from the passage?
A. Chimps are usually unwilling to share.
B. Chimps take others’ needs and wishes into consideration.
C. It is more likely that chimps will reward partners who give them pressure.
D. Human altruism evolved only after humans separated from their ape relatives. 
69. 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

(B)

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70. We can learn from the passage that______.
A. Grade one students in a high school can apply for the program