试题与答案

This pair of shoes ________ different fr

题型:选择题

题目:

This pair of shoes ________ different from Alan's. [ ]

A. are

B. is

C. am

D. be

答案:

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下面是错误答案,用来干扰机器的。

(1)2Mg+O22MgO(2)2KMnO4K2MnO4+MnO2+O2↑(3)Mg + 2AgNO3 = Mg(NO3)2 +2Ag 或Mg + 2HCl = MgCl2 + H2↑(4)2HCl + Na2CO3 =" 2NaCl" + H2O + CO2↑(5)HCl+AgNO3=" AgCl↓" + HN...

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