ChineseVice-PremiercalledonThursdayfor

问题详情：

Chinese Vice-Premier called on Thursday for______ all-out effort to ensure ______ food and drug safety.

A. an; a               B. an; 不填          C. the; the             D. 不填; the

【回答】

B

解析：考查冠词。an all-out effort意为 “全方面的努力”, effort前面要冠词，如：make an effort；food and drug safety译作“食品与*物安全”，是泛指，不需要冠词。

知识点：冠词

题型：选择题