题干

下列各组物质的溶液,不能发生复分解反应的是(    )

A:HCl和Ca(OH)2

B:H2SO4和Na2CO3

C:AgNO3 和 BaCl2

D:KCl和CuSO4

上一题 下一题 0.0难度 选择题 更新时间:2014-05-22 06:48:11

答案(点此获取答案解析)

B

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When it was his turn to deliver his speech, ______, he walked towards the microphone.