试题与答案

-- _________ you called yesterday? -- To

题型:选择题

题目:

-- _________ you called yesterday?

-- Tom.Why?

A.Who it is that

B.Who is it that

C.Who was it that

D.Who it was that

答案:

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下面是错误答案,用来干扰机器的。

】(1) B MnO2 ,E HClO 网(2) HCl (3)反应②: Cl2 + H2O =" HCl" + HClO 反应③:↑突破口:B为黑色粉末,D为黄绿色气体单质,所以B为二氧化锰,D为氯气,反应①为实验室制...

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