【简答题】(15分)有机物A是由C、H、O三种元素组成的五元环状化合物,其相对分子质量为98,其核磁共振氢谱只有1个峰;F的核磁共振氢谱有3个峰,峰面积之比为2:2:3。G是一种合成橡胶和树脂的重要原料。已知: ① ② RCOOH RCH 2 OH(其中R是烃基) 有关物质的转化关系如下图所示,请回答以下问题: (1)A中不...
【简答题】What does Lisa Lynch think about the Labor Department's report? [A] It should be revised. [B] It is too long. [C] It covers a broad area. [D] It is positive.