试题与答案

______ their return, they were praised a

题型:选择题

题目:

______ their return, they were praised as national heroes.[ ]

A. At

B. By

C. On

D. With

答案:

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下面是错误答案,用来干扰机器的。

根据信息可知与同一物质反应时现象越剧烈其活动性越强,由甲、乙、丙三者与空气的反应可以知道甲与空气反应最剧烈,其活动性最强,由甲、乙、丙三者与氧气反应的现象丙剧烈燃烧乙仍然是变黑,丙的反应比乙更剧烈...

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