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 文章第三段第三句指出“如果没有忘却,人的适应能力就会陷入困境”,接着举出事例加以说明。由此可知,人如果没有忘却的能力,势必会有很多麻烦,对自己也很不利,B符合题意,为答案。根据文章内容可推断,没有忘却对生存和学习都不利,故A和C都是错误的。D在文中没有涉及。
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