题目内容

Drinking and driving is one of the most common (causes) of traffic accidents.

A. 引起
B. 资源
C. 原因
D. 问题

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He is an expert in (crisis) management .

A. 危机
B. 潜力
C. 欺骗
D. 推迟

Membership has (swelled) to over 20 000.

A. 摇摆
B. 增加
C. 减少
D. 堕落

Your efforts will (make a difference).

A. 改变
B. 不同
C. 热情
D. 有影响

we should (be smart about) using the internet.

A. 极大地
B. 细小地
C. 有计划地
D. 巧妙地

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