What could home owners do to comply with the new regulation? A.Write a letter. B.Ask for permission. C.Use more electricity. D.Install new low-soot fireplaces.
A.Write B.Ask C.Use D.Install
【参考答案】
D 第二、三、四段。政府认为应当限制煤烟的排放量,以减少空气中的污染颗粒。工厂是排放煤烟最多的地方,应当加以限制......