47. 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.
(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
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发表于 2008-2-16 00:08:00
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