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【简答题】
2012年2月29日，我国发布新修订的《环境空气质量标准》，新标准增加了PM2.5检测指标．PM2.5是指大气中直径小于或等于2.5微米的颗粒物，主要来自化石燃料的燃烧和扬尘，对人体健康和空气质量的影响很大． （1）计入空气污染指数的项目中除了可吸入颗粒物外，还包括______（填序号）． ①CO      ②CO 2 ③SO 2 ④NO 2 （2）以下不属于化石燃料的是______（填序号）． ①天然气    ②石油    ③酒精    ④煤 （3）下列关于PM2.5的说法错误的是______（填序号）． ①燃放烟花爆竹会产生PM2.5；        ②PM2.5是造成灰霾天气的“元凶”之一 ③PM2.5的颗粒大小与分子大小差不多；④PM2.5专用口罩使用了活性炭，是利用了活性炭的吸附性． （4）除了对汽车尾气的检测，请举一例对PM2.5的治理能起到积极作用的措施：______．
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