2. 外语
  3. Some kinds of deadly bacteria, including those that cause tetanus, tuberculosis, and botulism, remain________until something tri

Some kinds of deadly bacteria, including those that cause tetanus, tuberculosis, and botulism, remain________until something tri

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问题 Some kinds of deadly bacteria, including those that cause tetanus, tuberculosis, and botulism, remain________until something triggers their insidious activity.
A. harmless
B. innocuous
C. anomalous
D. aberrant
E. efficacious
F. undetectable
选项
答案A,B
解析 逻辑连接词是until，表示前后语义相反。前面说致命细菌通常是________的，后面说触发了它们潜伏的活动(triggers their insidious activity)。语义连接是空格与triggers their insidious activity相反。insidious的意思是“暗中为害的”，那么没触发时应该“无害”，所以空格表达“无害”的含义，选项符合预期的是A项harmless和B项innocuous(无害的)。
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