(Worst of all), the "greenhouse effect" could cause polar ice caps (to melt), (raising) sea level (too high) that some cities wo

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问题 (Worst of all), the "greenhouse effect" could cause polar ice caps (to melt), (raising) sea level (too high) that some cities would vanish.

选项 A、Worst of all
B、to melt
C、raising
D、too high

答案D

解析 本题的意思是海平线被提升得太高,以至于有的城市会被淹没,应用so…that句型。 too high应改为so high。
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