题干

甲烷和水反应可以制水煤气(混合气体),其反应的微观示意图如图所示.根据微观示意图得出的结论正确的是(   )

A:该反应中甲、乙的质量比为8:9

B:该反应中含氢元素的化合物有3种

C:该反应属于置换反应

D:甲烷是由碳、氢原子构成的有机物

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答案(点此获取答案解析)

A

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    But Hollywood is fighting back. The state of California is trying hard to keep its best-known industry.