The moon was obscured by thick clouds.

admin2015-02-17  34

问题 The moon was obscured by thick clouds.

选项 A、held
B、prevented
C、darkened
D、blackened

答案B

解析 句意为:厚厚的云朵遮住了月亮。prevent意为“预防、阻止”,hold意为“持有、保留”,darken意为“使模糊、变黑”,blacken意为“使变黑、诽谤”。obscure意为“遮掩,使变暗”和B项同义,故选B项。
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