联苄的制取原理为：

反应最佳条件为n（苯）：n（1，2－二氯乙烷）＝10 ：1，反应温度在60－65℃之间。

实验室制取联苄的装置如下图所示（加热和加持仪器略去）：

实验步骤：

在三口烧瓶中加入120．0mL苯和适量无水AlCl₃，由滴液漏斗滴加10. 7 mL1，2－二氯乙烷，控制反应温度在60－65℃，反应约60min。将反应后的混合物依次用稀盐酸、2％Na₂CO₃溶液和H₂O洗涤分离，在所得产物中加入少量无水MgSO₄固体，静置、过滤，先常压蒸馏，再减压蒸馏收集170～172℃的馏分，得联苄18.2g。

相关物理常数和物理性质如下表

完成对话
A: How was your vacation, Fred?
B: ____ .
A: ____ ?
B: I went to the U.S. with my parents.
A: Cool! ____  in the U.S.?
B: First we went to Los Angeles(洛杉矶). My uncle lives there. Then we went to New York to see my cousin.
A: ____ ?
B: It was a little warm but sunny.
A: Did you see any movie stars in Los Angeles?
B: No, but I saw Tom Cruise in New York. He was at a restaurant! I got his autograph.
A: Wow! That’s great!  What else did you do in New York?
B: Hmm…Oh yeah, I also went to Central Park.____ there! .

在课文《春天的小雨嘀嘀嘀》中找出三句比喻句抄写来。

①____

②____

③____

It is ______for him to get to school on time, because it is raining ______.