随着人们生活水平的提高，私家车（personal cars）已渐渐被越来越多的家庭所接受，这无疑给家庭生活带来了许多便利和乐趣。但是在人口密集的城市，私家车也有一些负面影响。根据提示内容及你个人见解，完成70词以短文。
| 正方 | 反方 |
| 1.save time | 1.make too much noise |
| 2.make life more convenient | 2.make cities more crowded |
| 3.go to work more easily | 3.high price of the petrol (汽油) |
| …… | …... |
With the development of economy(经济), our life is becoming better and better. Personal cars have come into many families. ____________________________________________________
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