happens in the world makes us happy and sad by turns. A. ThatB. WhatC. WhichD. Whether

发布时间:2020-08-17 12:50:11

     happens in the world makes us happy and sad by turns.
A. That
B. What
C. Which
D. Whether

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A. That
(答案→)B. What
C. Which
D. Whether
解析:本题考查引导主语从句的连接词。that引导主语从句只起连接作用,在从句中不作任何成分,无意义,但不能省略。what除引导主语从句外, 还在从句中作成分。which指一定范围内的“哪一个”;whether意为“是否”。根据句意“世上的事喜忧交替”可知答案为B
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