8．Chinese Vice-Premier called on Thursday for _____ all-out effort to ensure _____ food and drug safety．（　�。�
A．an； aB．an；\C．the； theD．\;the

分析 中國國務院副總理星期四發(fā)表講話，呼吁各方面作出努力，以確保食品和藥品安全．

解答 答案：B
該題考查冠詞，結(jié)合句意，effort為可數(shù)名詞，意為"努力"，表范指，故前面應使用不定冠詞，類似用法如：make an effort，而safety為不可數(shù)名詞，表范指，前面不用冠詞，故選B．

點評 考查冠詞的用法，一定要結(jié)合句意，判斷名詞表示特指還是泛指，再判斷應該使用何種冠詞．

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