单选题
Emotions are significant for man ' s survival and adaptation because ______.
A、
they provide the means by which people view the size or shape of objects
B、
they are the basis for the social feeling of agreement by which society is maintained
C、
they encourage people to perform dangerous achievements
D、
they generate more love than hate among people
【正确答案】
B
【答案解析】
第二段说情感对人类的生存适应具有重大意义，因为从中产生出一种a social feeling of agreement，而这些又使社会能够maintain itself，选项B符合。
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