Both passages are primarily concerned with ______.
A、the fate of man's closest genetic relative
B、the requisite diet and habitat of chimpanzees
C、the contrast between free-living and captive chimpanzee life expectancy
D、chimpanzee intelligence and strength
E、the appealing nature of infant chimpanzees
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试题解析
B项不正确,因为两篇文章都没有提到黑猩猩的饮食。文中只讨论了圈养黑猩猩的平均寿命,C项不正确。D项不全面,因为两篇文章不只是关于黑猩猩的智力和力量。两篇文章并不知仅仅关于幼崽黑猩猩的,E项不正确,只有A项最全面。