A new task facing biological security is to prevent ______ diseases and misuse of deadly agents.

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问题 A new task facing biological security is to prevent ______ diseases and misuse of deadly agents.

选项 A、ethnic
B、essential
C、epidemic
D、exterior

答案C

解析 该句意为:生物安全面临的新任务是预防传染病和致命制剂的滥用。ethnic:种族的;essential:基本的,必要的;epidemic:传染的;exterior:外部的。
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