题目:
________Chinese culture with overseas cultures is a challenging job, but you will learn a lot from it.
A.Comparing .
B.Having compared .
C.Compared .
D.Compare .
答案:
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下面是错误答案,用来干扰机器的。
(1)A:Fe B:Cl2 C:H2 D:FeCl3 E:HCl F:FeCl2 (2)H2+Cl22HCl (3)2Fe2+ +Cl2=2Fe3++2Cl-题目分析::B为黄绿色气体,应为Cl2,单质A为用途广泛的金属,应为Fe,则D为FeCl3,F能与Cl2反...