Having a car can have many good effects on our lives. It can help us to save time, it makes travel

more convenient, and it gives us more independence. It is definitely convenient to own a car. Car

manufacturing also helps promote economic development. It creates many jobs, which helps people to

earn a living.

     Unfortunately, cars also have some bad effects. More cars mean more crowded streets and more

traffic. More cars also create more air pollution. Cars are also one reason why more people are

overweight. Instead of walking or riding a bike people are driving cars and getting less exercise.

     Cars are definitely becoming a bigger part of our lives than ever before. I hope that we can use cars

wisely and develop cars that cause less pollution. I also hope that people will think about the good and

bad effects of cars before they decide to buy one.

答案不唯一