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【单选题】
我国城市环境中的大气污染物主要是A.
CO、Cl 2 、N 2 、酸雨
B.
HCl、O 2 、N 2 、粉尘
C.
SO 2 、NO 2 、CO、粉尘
D.
NH 3 、CO 2 、NO、雾
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【单选题】Geoffrey ChaucerGeoffrey Chaucer (born 1340/44,died 1400) is remembered as the author of The Canterbury Tales, which ranks as one of the greatest epic works of world literature. Chaucer made a crucial...
A.
Because he was appointed as justice of the peace.
B.
Because he was elected to Parliament.
C.
Because he lost his employment and rent-free home.
D.
Because he produced most of his best poetry.
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【简答题】循环经济，是在生产、流通和消费等过程中进行的，减量化、再利用、资源化活动的总称。其中资源化是指直接将废物作为原料进行利用或者对废物进行再生利用。 以下各项中，不属于资源化的是： A.把生活废水引到预定的净化系统中，采用物理的、化学的或生物的方法进行处理，使其达到可以重新利用的标准 B.某养殖场将废水引入沼气池沉淀后，用作池塘养鱼的用水 C.将小区的雨水收集起来，用作道路冲洗、绿化用水 D.造纸厂利...
【单选题】I can hardly imagine Peter ____ across the Atlantic Ocean in five days.
A.
sail
B.
to sail
C.
sailing
D.
to have sailed
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