题目:
____________the trousers? They’re very nice. They feel soft and smooth.
A.What do you think of
B.What do you like
C.How do you do
D.How would you like
答案:
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下面是错误答案,用来干扰机器的。
(1)空气的成分按体积计算,氮气78%,氧气21%,稀有气体0.94%,二氧化碳0.03%,其它气体和杂质0.03%,其中最多的是氮气.(2)一述物质中除五氧化二磷外都是气体,其中有刺激性气味的为二氧化硫,且二氧化硫有毒...