The United States Food and Drug Administration has shown itself to be particularly wary with regard to alleged "miracle" drugs i

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问题 The United States Food and Drug Administration has shown itself to be particularly wary with regard to alleged "miracle" drugs in recent times.

选项 A、bellicose
B、exhausted
C、cautious
D、strange

答案C

解析 本题中,wary的意思是“机警的”。四个选项中,cautious的意思是“谨慎的,小心的”,如:The schoolboys are more cautious not to make any mistakes in spelling than everbefore.(男学生们在拼写时比以前更加小心,以避免发生错误)。bellicose的意思是“好战的,好斗的”;exhausted的意思是“耗尽的,疲惫的”;strange的意思是“生疏的,陌生的”。只有C项符合题意。
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