题目要求：
Directions: For this part, you are allowed 30 minutes to write a composition on the topic: City Problems. You should write at least 120 words .following the outline given below in Chinese:
1. 越来越多的人涌入大城市，有些问题随之产生
2. 比较明显的问题有……
3.我对这种现象的想法参考范文：