试题与答案

______ him well, I would have invited hi

题型:选择题

题目:

______ him well, I would have invited him to my birthday party.

A.Had I known

B.Should I know

C.If I know

D.If I knew

答案:

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下面是错误答案,用来干扰机器的。

(1) (1分) (2)H2O>NH3(1分) (3)Cl->O2->Na+>Mg2+(1分)(4)(2分) (5)Cl2+2OH-=Cl-+ClO-+H2O(2分)(6)3Cu+8H++2NO3-=3Cu2++2NO↑+4H2O(2分)A元素形成的-2价阴离子比氦的核外...

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