题目内容

()是防止毒物危害的最佳方法。

A. 穿工作服
B. 佩戴呼吸器具
C. 使用无毒或低毒的代替品
D. 穿防护服

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在股份制企业、合资企业中，保障安全投入的资金()予以保证。

A. 财务部
B. 行政部
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D. 以上都不对

A survey was carried out on cheating in examinations in college all over the country, ________ were surprising.

A. such results
B. the results of which
C. these results
D. the results of it

When she arrived, I felt bored and disappointed, because I____________ since seven o’clock.

A. had waited
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A. adapted
B. brought
C. were waiting
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