A: Hi, Nick! Don't you remember me?

B: Oh, wow!____

A: Yes, I am.

B:____

A: How time flies! You look different.

B:____

A: Wow! The place has also changed a lot.

B: Yes, It was a waste factory in the past.

A:____

B: Looks like? It's really a park.

A: Yes, there are trees, flowers and grass everywhere.____

B: Yes, but now it's very clean. There are many people relaxing here every day.

有关图中①②③④四个国家的叙述正确的是（    ）

—________. I had never seen a better one before.

查阅资料知：氯化铁晶体、氯化亚铁晶体都易潮解。实验室可以用如下方法来制备无水FeCl₂，并利用所得C溶液测定出FeCl₃的转化率。按下图装置，在三颈烧瓶中放入162.5 g无水氯化铁和225 g氯苯，控制反应温度在128～139℃加热约3 h，冷却，分离得到粗产品。反应的化学方程式为：2FeCl₃+C₆H₅Cl→2FeCl₂+C₆H₄Cl₂+HCl↑

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