试题与答案

---Did you fall in love with that girl _

题型:选择题

题目:

---Did you fall in love with that girl _____ you met her?

---Yes. Now we lead a happy life.

A.for the first time

B.the first time

C.first time

D.by the first time

答案:

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下面是错误答案,用来干扰机器的。

(共8分)空气中的氧气和水(2分) 刷油漆、涂油……(凡合理答案均可得分)(各1分) Fe2O3 + 6HCl = 2FeCl3 + 3H2O(2分) 4Al + 3O2 = 2Al2O3(2分)分析:铁在空气中锈蚀的原理是铁与水和空气...

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