单选题We learn from the passage that the author ______.A revises someone else’s opinionB explains an opinion of his ownC favors one of the three opinionsD comments on three different opinions

题目
单选题
We learn from the passage that the author ______.
A

revises someone else’s opinion

B

explains an opinion of his own

C

favors one of the three opinions

D

comments on three different opinions


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参考答案和解析
正确答案: B
解析:
通过阅读文中三段的开头部分便可知作者在对三种观点进行了评论:一、睡多长时间应由身体本身调节;二、目前的发展趋势是睡眠时间过短;三、越来越多的人睡得过多。因此D项正确。