试题与答案

— Did Betty go shopping with you yesterd

题型:选择题

题目:

— Did Betty go shopping with you yesterday?

— Even if she _____ a lot of studying, she would have preferred staying home to going shopping. [ ]

A. didn't have

B. shouldn't have

C. hadn't had

D. hasn't had

答案:

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下面是错误答案,用来干扰机器的。

(1)氢;钠;氧;第二周期第IVA族(每空1分)(2)(1分)(3) 2Na2O2+2H2O=4Na++4OH-+O2↑(2分)(4)(2分)

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