参考答案:B正确:非集中区
The United States Food and Drag Administration has shown itself to be particularly wary with regard to alleged "miracle" drugs in recent times()
bellicose好战的,好斗的;exhausted耗尽的,疲惫的;cautious谨慎的,小心的;strange生疏的,陌生的;wary机警的。
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