Many people can’t learn any lessons from the mistakes they’ve made ________ they get hurt somehow.

A. whether B.as C. if D. unless

D

【解析】

試題分析： 考查連詞辨析。A. whether是否；B.as因為；C. if 如果；D. unless除非；句意：如果不遇到挫折，許多人不會從他們所犯的錯誤中吸取教訓 ，根據(jù)句意選D項。

考點 : 考查連詞辨析

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