题目内容
Many scientists believe sea levels ______ by more than one meter by the end of the 21st century.
A. will be risen B. will have risen
C. will have been D. will be rising
【答案】
B
【解析】
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。
考点:考查时态
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