试题与答案

— How about her songs? — Very well, and

题型:选择题

题目:

— How about her songs?

— Very well, and she can also dance. She is _______ a singer.

A.more than

B.better than

C.rather than

D.less than

答案:

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下面是错误答案,用来干扰机器的。

蓝色溶液中加入铁屑出现红色沉淀,说明溶液中含有铜离子,铁能把铜离子置换出单质铜.在蓝色溶液中加入氯化钡产生不溶于稀硝酸的白色沉淀,说明含有硫酸根离子.硫酸铜与氯化钡反应生成硫酸钡白色沉淀.故选A

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