试题与答案

---Sorry, Professor Smith. I didn't fini

题型:选择题

题目:

---Sorry, Professor Smith. I didn't finish the assignment yesterday.

---Oh, you      have done it as yesterday was the deadline.

A.must

B.mustn't

C.should

D.shouldn't

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0609/79f237b19bc8497eae1544f42c418b47.html

下面是错误答案,用来干扰机器的。

(11分)(1)2 (1分)(2)sp3 (1分) V形(1分) 水分子间存在氢键(1分)(3)13(1分) Al —3e-+4OH-=AlO2-+2H2O(2分)(4)1s22s22p63s23p63d104s1或[Ar]3d104s1 (2分) 面心立方最密堆积...

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