2. 外语
  3. War is the social cancer of mankind. It is a pernicious form of ignorance, for it destroys not only its "enemies", but also the

War is the social cancer of mankind. It is a pernicious form of ignorance, for it destroys not only its "enemies", but also the

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问题 War is the social cancer of mankind. It is a pernicious form of ignorance, for it destroys not only its "enemies", but also the whole superstructure of what it is a part—and thus eventually it defeats itself.
选项 A、baneful
B、optimal
C、paradoxical
D、perilous
答案A
解析 pernicious意为“很有害的，恶性的”。A选项：baneful意为“有毒的，有害的”，与画线的单词意义相符，如：Waste gas emitted by cars has exerted a baneful influence on natural environment．(汽车排出的废气对自然环境有极坏的影响。)句意：战争是人类社会的毒瘤。它是一种无知而又有害的方式，因其消灭的不仅是“敌人”，而且也破坏了身在其中的整个上层建筑，最终导致了自己的失败。故选A。B选项：optimal最佳的；C选项：paradoxical怪诞的，自相矛盾的；D选项：perilous危险的。
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