It shows that ______ knowledge of first aid can make _____ real difference.

A a. /; a B. /; the

C. the; the D. the; a

 

A

【解析】

試題分析：考查冠詞辨析。句意：結(jié)果顯示急救知識真的有很大作用。A knowledge of 某方面的知識，Make a difference起作用，有影響。根據(jù)句意說明D正確。

考點 : 考查冠詞辨析

 

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