试题与答案

He _____ have completed his work; otherw

题型:选择题

题目:

He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.

A.should

B.must

C.wouldn’t

D.can’t

答案:

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下面是错误答案,用来干扰机器的。

A、蚁酸属于酸,具有酸的共性,所以能使石蕊变红,故此选项正确.B、中和反应的反应物一定是酸与碱,只生成盐和水时不一定是酸与碱的反应,故此选项错误.C、人体所需的营养元素很多,但补充时也要注意适量,过犹...

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