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    精英家教网 > 高中英语 > 题目详情
    Many scientists believe sea levels ______ by more than one meter by the end of the 21st century.
    A．will be risenB．will have risen
    C．will have beenD．will be rising
    B

    试题分析：考查时态：句意：很多科学家相信，海平面到21世纪末为止将会上升超过一米。时间状语是by the end of the 21st century.如果by+将来时间，谓语的时态应该是将来完成式，选B。
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