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 In science fiction we read of flying saucers travel through _____ space, so people want to have ______ better knowledge of the universe.

A. the; a                  B. /; /                      C. the; /                 D. /; a

 

【答案】

 D

解析:space作“太空;空间”讲时,是不可数名词,前不需冠词。have a knowledge of 意为“对……理解/ 熟悉”。如:He has a good knowledge of politics.(他对政治非常熟悉)。故D是正确答案。

 

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