【題目】霧霾紀(jì)錄片《穹頂之下》引發(fā)社會熱議，據(jù)此完成下面小題。

【1】影響城市空氣質(zhì)量的因素是

A.自然因素B.人為因素

C.自然因素為主，人為因素為輔D.人為因素為主，自然因素為輔

【2】下列做法中能夠改善空氣質(zhì)量的是

A.日常生活中隨意焚燒垃圾B.清明祭掃時焚燒各種祭品、燃放炮竹

C.冬季燃煤取暖D.大力發(fā)展新能源汽車

【答案】

【1】D

【2】D

【解析】

【1】空氣污染指數(shù)反映空氣被污染的程度，指數(shù)越大，空氣污染越嚴(yán)重；森林對大氣中的灰塵有一定的吸附作用,可以通過擴大綠化面積來改善空氣質(zhì)量,所以影響城市空氣質(zhì)量的因素是人為因素為主，自然因素為輔；故答案選D。

【2】日常生活中隨意焚燒垃圾，破壞環(huán)境，不能改善空氣質(zhì)量，故A錯誤；清明祭掃時焚燒各種祭品、燃放炮竹，空氣污染嚴(yán)重，不能改善空氣質(zhì)量，故B錯誤；冬季燃煤取暖，空氣污染嚴(yán)重，不能改善空氣質(zhì)量，故C錯誤；大力發(fā)展新能源汽車，改善環(huán)境，能改善空氣質(zhì)量，故D正確；故答案選D。

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