【題目】The government must be very ________ about setting policies and make no decision until they are quite sure it is the right one.

A. serious B. concerned C. cautious D. nervous

【答案】C

【解析】

試題分析：考查形容詞辨析。句意：政府必須謹慎制定政策，直到十分確定這是對的，才能作出決定。be cautious about 對 ...謹慎。serious嚴肅的；concerned .對……關心；nervous緊張的。故選C。

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