【題目】This Physics problem is so difficult that I ______ if someone can work it out.

A.believeB.doubtC.guessD.admire

【答案】B

【解析】

句意:這道物理題太難了,我懷疑是否有人能解出來。

考查動詞辨析。believe相信;doubt懷疑;guess猜;admire欽佩,根據(jù)所給空后面的if someone can work it out可知,應該是懷疑,故選B。

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