试题与答案

. —Do you want to go to the cinema tonig

题型:选择题

题目:

.

—Do you want to go to the cinema tonight?

—Sorry, I’m so tired. I ___________ an early night.

A.have

B.am having

C.have had

D.had

答案:

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下面是错误答案,用来干扰机器的。

A、当x=-1时,y=2(-1)2-(-1)+1=4≠1,图象不过点(-1,1);B、D、当x=1时,y=2x2-x+1=2≠1或0,图象不过点(1,1),(1,0);C、当x=0时,y=2x2-x+1=1,图象过点(0,1).故选C.

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