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10.For young people,friends are often determined by their being close.Whoever is around is your friend.As humans get older,they become more selective (講究的) in choosing whom they spend time with,as well as how they spend their time.According to a new study,the same goes for monkeys.The findings,in the journal Cell Biology,suggest human selectivity may be a very strong part of our evolutionary history (進化史).
"An important finding suggests that humans become more socially selective when they know that their remaining life time is limited,such as in old age,"Professor Laura Almeling explained."We don't think that monkeys are aware of their own limited future time.Therefore,if they show similar changes in old age,their selectivity cannot be attributed to their knowledge about a limited future time,"she continued.
Researchers showed a variety of new animal toys,only one of which included a food treat,to a group of African monkeys.Young monkeys quickly grew out of their interest in the toys,preferring only the object that included food once they grew up.
Researchers also measured how monkeys'social activities change as they age,by watching and measuring their responses to pictures and sounds of friends.
Although older monkeys still took part in and remained interested in group activities,they put less time and energy into social relationships."With increasing age,the monkeys became more selective in their social activities,"Almeling said."They had fewer‘friends'and put less time into social activities.Interestingly,however,they were still interested in what was going on in their social world.Older females continued to respond particularly strongly to hearing a scream for help from their best friend,"Almeling explained."Older males still liked to look at pictures of the newborns,"she said.

32.What has the new study found?C
A.Humans have many things in common with monkeys.
B.Monkeys become closer to each other as they get older.
C.Monkeys get more selective as they get older.
D.Humans choose friends more seriously when they are older.
33.What happens to monkeys as they get older?A
A.They choose friends and social activities more carefully.
B.Their knowledge about their future time grows.
C.They become aware that they have little time left.
D.They show more interest in food.
34.What can the underlined words be replaced by?C
A.Be devoted to     B.Be helpful to       C.Be caused by      D.Be aware of
35.Female monkeysB their friends'screams for help when they are old.
A.put less time and energy into
B.still have a strong response to
C.change social reactions to
D.don't show interest in.

分析 本文屬于說明文閱讀,作者通過這篇文章主要向我們描述了研究發(fā)現猴子越老越有選擇性,就如同人一樣.

解答 32.C.細節(jié)理解題.根據第一段The findings,in the journal Cell Biology,suggest human selectivity may be a very strong part of our evolutionary history 可知研究發(fā)現猴子越老越有選擇性;故選C.
33.A.細節(jié)理解題.根據文章Although older monkeys still took part in and remained interested in group activities,they put less time and energy into social relationships可知老年的猴子更仔細地選擇朋友和社交活動;故選A.
34.C.詞義猜測題.根據第二段Therefore,if they show similar changes in old age,their selectivity cannot be attributed to their knowledge about a limited future time,"she continued可知因此,如果他們在晚年的變化相似,其選擇性不能由于他們的知識有限的未來時間;意為由什么造成;故選C.
35.B.細節(jié)理解題.根據最后一段Older females continued to respond particularly strongly to hearing a scream for help from their best friend,"Almeling explained可知年老的雌猴對于伙伴求助的叫聲有強烈反應;故選B.

點評 考察學生的細節(jié)理解和推理判斷能力,做細節(jié)理解題時一定要找到文章中的原句,和題干進行比較,再做出正確的選擇.在做推理判斷題不要以個人的主觀想象代替文章的事實,要根據文章事實進行合乎邏輯的推理判斷.

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