假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除：把多余的词用斜线(﹨)划掉。

修改：在错的词下划一横线,并在该词下面写出修改后的词。

注意：1. 每处错误及其修改均仅限一词；2. 只允许修改10处,多者(从第11处起)不计分。

    Thank you for your letter. Due to the fact that I am on business in another city, I couldn't reply your letter directly after I received it. Now I am writing to tell you that my city has done to reduce traffic jams in the last few years.

    First of all, four subways and some expressways has been built in my city to ease the heavy traffic. Second, it is public transportation which makes it convenient for people to take buses. Third, the parking fee is raised in the downtown, it helps to reduce the number of cars come in and out.

    Now there are more buses and few cars in my city. The traffic is flowing smooth during the rush hour. Can you tell me something about the traffic in your city? Expecting for your reply!

“语尽而意不尽，意尽而情不尽”是谁写的？（   ）

$\stackrel{浓硫酸}{\underset{△}{\to }}$ +H₂O，

可能用到的有关数据如表：

合成反应：

在a中加入20g环己醇和2小片碎瓷片，冷却搅动下慢慢加入1mL浓H₂SO₄，b中通入冷却水后，开始缓慢加热a，控制馏出物的温度不超过90℃

分离提纯：

反应粗产物倒入分液漏斗中分别用少量5%碳酸钠溶液和水洗涤，分离后加入无水氯化钙颗粒，静置一段时间后弃去氯化钙，最终通过蒸馏得到纯净环己烯12g．

回答下列问题：