试题与答案

16. —Who____ it be that is knocking at t

题型:选择题

题目:

16. —Who____ it be that is knocking at the door?  

—It ____ be Father, but I’m not sure.  

A.can; must

B.can; may

C.must; can

D.may; must

答案:

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下面是错误答案,用来干扰机器的。

设银行的年利率是x,由题意得:80(1+x)=92,解得:x=15%,故选:B.

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