The FDA is expected to require safety studies on e-cigarettes and______their use.

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问题 The FDA is expected to require safety studies on e-cigarettes and______their use.

选项 A、regulate
B、recollect
C、rebound
D、rehearse

答案A

解析 该句意为:期望食品与药品管理局要求对电子香烟做安全性研究并监管其使用。regulate:调节,管理;recollect:回忆;rebound:反弹;rehearse:彩排,演练
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