CET-4 compositiona.topic introducer:The city and the countryside are similar in some ways, but there still exist great differences in several areas. b.topic sentence:Generally speaking,the city and the countryside differ mainly in the fields of environment,transportation,public health service,education and entertainment. City Countryside environment polluted fresh,clean transportation convenient,cheap difficult,costly public health service well-equipped poor-equipped e
ducation advanced backward entertainment colourful boring c.Conclusion:As we have seen,there are still great differences between the city and the countryside,but further economic development will certainly reduce the gap between the two in the near future.19 WebEx Confidential