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Scientists are trying to find more ______ ways to make full use of solar energy.A. disrespectfulB. casualC. efficientD. punctual

Scientists are trying to find more ______ ways to make full use of solar energy.

A. disrespectful
B. casual
C. efficient
D. punctual

题目解答

答案

C

解析

此题考查形容词的辨析。disrespectful 意为“不尊敬的”，casual 意为“随意的”，efficient 意为“有效的”，punctual 意为“准时的”。根据句意，科学家们正在寻找更有效的方法来充分利用太阳能，因此应选择 efficient。

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