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工业上用甲苯为原料生产对一羟基苯甲酸乙酯 （一种常用的化妆品防腐剂）。其生产过程如下图所示（反应条件未全部注明）： 请回答下列问题： (1)有机物A的结构__________。 (2)写出反应⑤的化学方程式：___________（注意反应条件）。 (3)写出反应②④的反应类型：反应②________ 、反应④ __________。 (4)写出反应③的化学方程式： _____________（不必注意反应条件）。 (5)在合成路线中，设计③和⑥的目的是______________。 (6)有机物的同分异构体有多种，其中既含有酚羟基又含有酯基的同分异构体共有______________种。
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【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
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had a sense of fashion
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