2. 外语
  3. Displays of the aurora borealis, or "northern lights," can heat the atmosphere over the arctic enough to affect the trajectories

Displays of the aurora borealis, or "northern lights," can heat the atmosphere over the arctic enough to affect the trajectories

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问题 Displays of the aurora borealis, or "northern lights," can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles, induce electric currents that can cause blackouts in some areas and corrosion in north-south pipelines.
选项 A、to affect the trajectories of ballistic missiles, induce
B、that the trajectories of ballistic missiles are affected, induce
C、that it affects the trajectories of ballistic missiles, induces
D、that the trajectories of ballistic missiles are affected and induces
E、to affect the trajectories of ballistic missiles and induce
答案E
解析 根据enough…to do sth．句型，答案只能存在于A、E之间。据题意affect和induce是一并列成分，A、B却用一逗号将其隔开，中间也无连接词，排除A、B，E为正确答案。B、C、D中的enough…that句型不对；B、D中的affected与induces时态不一致，导致并列关系改变，从而改变句意。C中的affects与induces之间用逗号连接，缺并列连词，且it指代有误：原句动词不定式的逻辑主语为displays，而it只能指代前面的单数名词atmosphere或arctic。E用and连接，表明了表示结果的动词不定式并列关系(在and之后省了to)。
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