选择题:某物质的分子模型如图所示,下列说法错误的是

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题目内容:

某物质的分子模型如图所示,下列说法错误的是

A.该物质属于有机物

B.该物质的化学式为CH4

C.该物质的1个分子含有5个原子

D.该物质中碳、氢元素质量比为1∶4

参考答案:

2013年,我省兰州市城区环境空气质量优良天数达到299天,优良率达到了81.92%。历史性地退出了全国空气质量十大污染城市行列。现行空气质量日报中,未计入空气

2013年,我省兰州市城区环境空气质量优良天数达到299天,优良率达到了81.92%。历史性地退出了全国空气质量十大污染城市行列。现行空气质量日报中,未计入空气污染指数项目的是

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