试题与答案

Nothing can stop a _____ student _____ h

题型:选择题

题目:

Nothing can stop a _____ student _____ his mind to give up his studies. [ ]

A. promised; to change

B. promised; changing

C. promising; changing

D. promising; to change

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:A、煤气燃烧的过程中有新物质二氧化碳等生成,属于化学变化;水变水蒸气的过程中只是状态发生改变,没有新物质生成,属于物理变化,故A错误;B、瓷碗破碎的过程中只是形状发生改变,没有新物质...

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