题目内容

【题目】城市通风走廊是指在城市规划、建设过程中留出一定空间的走廊，以保持或引导自然气流贯穿高楼大厦密集的城市，起到改善环境的作用（如图甲）.北京将建设5条宽度500米以上的一级通风走廊，多条80米以上的二级通风走廊（如图乙）.有关这种做法的影响，下列说法正确的是（　　）

①通风廊道走向，基本和北京市冬、夏季风风向一致

②城市通风走廊能增加空气流动性，减轻污染

③通风走廊能从根本上杜绝雾霾

④通风走廊应当以绿地为主.

A. ①②③ B. ①③④ C. ②③④ D. ①②④

【答案】D

【解析】读图可知, ①通风廊道走向，基本和北京市冬、夏季风风向一致; ②城市通风走廊能增加空气流动性，减轻污染; ③通风走廊能起到改善环境的作用,但不能从根本上杜绝雾霾; ④通风走廊应当以绿地为主.故答案选D.

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