The Arabian Nights _____ well known all over the world, in which many a story _____ interesting and

instructive.[ ]

A. is; are

B. are; is

C. are; are

D. is; is

有下列几种气体：

①汽车排放的尾气；　

②石油化工厂排放的废气；　

③海水蒸发形成的水蒸气；　

④烧煤产生的烟气；　

⑤植物进行光合作用放出的气体．其中都能使空气受到污染，对人体造成危害的是（　　）

A．①②③

B．③④⑤

C．①②④

D．③⑤