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)