From the evolutionary point of view. According to the passage, if a person never forgot.

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问题 From the evolutionary point of view.
According to the passage, if a person never forgot.

选项 A、he would survive best
B、he would have a lot of trouble
C、his ability to learn would be enhanced
D、the evolution of memory would stop

答案B

解析 根据第三段第三句Without forgetting, adaptive ability would suffer和其后举出加以说明的事例可知答案为[B]。没有忘却对生存和学习都不利,由此可排除[A1和[C]。[D]在文中没有提及。
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