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【单选题】
What can we learn about museums of the 1990s and 2000s from the passage?A.
They were characterized by democratic visions.
B.
They were designed by architects designated by collectors.
C.
They were built to express individualism and egoism.
D.
They were built to promote Thatcher-Reagan aspirations.
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【简答题】推断题: 化合物 A 的分子式为 C 6 H 13 N 与 2molCH 3 I 反应,生成季铵盐,后经湿氧化银处理后,得季铵碱 B , B 加热得化合物 C ( C 8 H 17 N ),化合物 C 与 1molCH 3 I 和 AgOH 反应,加热得化合物 D(C 6 H 10 ) 和 N(CH 3 ) 3 , D 用 KMnO 4 氧化得 CH 3 CH(COOH) 2 。试推出 A 、 B...