【題目】I am _______ about what I say because careless remarks are likely to hurt others’ feelings.

A. enthusiastic B. concerned

C. doubtful D. cautious

【答案】D

【解析】試題分析：形容詞短語辨析。Be enthusiastic about對…熱情；Be concerned about關注…；Be doubtful about懷疑…；Be cautious about對…很謹慎；對于所說的話我很謹慎，因為粗心的評論很可能傷害到其他人的感情。根據(jù)句意說明D正確。

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