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【题目】20世纪末,科学家通过卫星观测在印度洋和西北太平洋上空发现了大片大气污染带,面积约有美国那么大,称为“亚洲棕色云(ABC)”。ABC的主要成分有煤烟、硫酸盐、硝酸盐、粉尘、炭黑等。我国的黄淮海平原、长江三角洲和珠江三角洲是ABC的热点区。据此回答下面小题。

1关于“亚洲棕色云”的说法错误的是

A. 会危害身体健康

B. 会加剧全球变暖

C. 会降低能见度,减少到达地面的太阳光

D. 主要来源于火力发电厂、机动车、化工厂、水泥厂等排放的废气

2冬季是空气污染高发期,当空气重度污染时,我们应该怎么做

A. 尽量待在室内,关上窗户,打开空气净化器

B. 开窗通风,让空气流通

C. 出门都开私家车,减少吸入外界空气

D. 加强户外运动,提高身体免疫力

【答案】

1B

2A

【解析】本题组考查人类活动对气候的影响及其措施。

1 据图可知,该“亚洲棕色云”是由煤烟、硫酸盐、硝酸盐、粉尘、炭黑等污染物组成,对于太阳辐射有阻挡作用,故其不会加剧全球变暖的趋势

2尽量待在室内,关上窗户,打开空气净化器;“开窗通风,让空气流通”、“出门都开私家车,减少吸入外界空气”、“加强户外运动”等做法都会加剧这种危害对人类的影响。

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