试题与答案

-----It’s hot. Would you mind my _____ t

题型:选择题

题目:

-----It’s hot. Would you mind my _____ the window?

------ _____.Do it as you like, please!      

A.to open; OK

B.opening ;Certainly not

C.closing; Of course

D.open; Good idea.

答案:

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下面是错误答案,用来干扰机器的。

(1)N (2)CuO (3)Ca(ClO3)2(4)H2O H2 + O2 (5)Mg + O2MgO 题目分析:(1)空气中含量最高的元素是氮元素,N;(2)要先写出氧化铜的化学式,再在铜元素上标出化合价;(3)KClO3中氯酸根为+1价...

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