环境保护正日益受到各国政府和社会的广泛关注和重视。下列污染中，必须治理的有( )
①废弃塑料制品造成的“白色污染” ②排放含有机物的污水和使用含磷洗衣粉造成的“水质污染” ③机动车辆排放的尾气（含NOx、CO等）引起的“空气污染” ④燃烧煤、石油等化石燃料放出的SO2和粉尘，造成空气污染和“酸雨”⑤冰箱、空调等漏出的制冷剂〔如氟利昂（CCl2F2)〕破坏臭氧层
| A．①②③④⑤ | B．①②③ | C．①和② | D．只有① |
相关试题
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
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