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In ____ accident _____ knowledge of first aid can make _____ real difference.
A.an; a; aB.the; a; theC.an; the; 不填D.a; a; 不填
A

试题分析:句意:在一个事故中,急救的知识真的有很大差别。第一个空,表示泛指,且“accident”首字母发音是元音,故用不定冠词an ;第二个空表示泛指,且“knowledge”首字母发音是辅音,故用不定冠词a ;第三个空,make a difference 是固定用法,意思是有差别,有关系。选A。
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