It is reported that by the end of this month the output of cement in the factory______by about 10%.

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问题 It is reported that by the end of this month the output of cement in the factory______by about 10%.

选项 A、will have risen
B、has risen
C、will be rising
D、has been rising

答案A

解析 时态。 “by+时间”作状语时,常用完成时;本题中the end of this month确定了所在句子的谓语动词要用将来完成时will have risen。
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