标签：话题作文 话题 英语四级作文
字数：1000字
提要： cars and bicycles are similar in that they are both privately owned means of transport. however, there are a lot of differences between them. a car costs a lot more to buy than a bicycle. in addition, it is far more expensive to run. for example, a car has to be insured,and must be served regularly; further more, spare parts for a car cost a lot of money. a car uses petrol which is expensiv..