What does "impasse" probably mean? We can infer from the passage that fighting a problem is ______.

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问题 What does "impasse" probably mean?
We can infer from the passage that fighting a problem is ______.

选项 A、always sensible
B、sometimes useless
C、annoying
D、rewarding

答案B

解析 注意文中Doctor E.Jenner的例子。将Para.1第二句和Para. 3第二句结合起来看,可知他当初fight the problem,但无结果。the last sentence in Para.2是We struggle vainly“徒劳地”,fighting to solve the problem。从这些内容可推断此题答案为B。
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