题目内容：

Some cars do not run the way they should. Bad smoke from a car’s engine can get into the air. This bad smoke is called pollution.

Pollution turns the air a gray color. It is very dirty. It is not good for people to breathe this dirty air.

In order to keep pollution down the state makes cars take a test every two years. This test checks to make sure the cars do not pollute the air. If a car does not pass the test the owner cannot register (登记) it.

Some car owners drive their cars even though they cannot pass the test. This is against the law. It is also very bad for the air.

People wanted to find a way to get these cars off the road. A program was started that seems to be helping. This program buys cars that cannot pass the tests or will help pay for repairs.

In order to qualify for the program a car must be drivable and the owner cannot make over a certain amount of money. This program has been helping people by giving them money to help buy better cars or fixing their old ones. It has also been helping to cut down on pollution.

1.Which of the following is the effect that bad smoke from cars causes?

A. The colour of the air.    B. The temperature of air.

C. The quality of the air.    D. Both A and C.

2.The aim of the program in the passage is to ________.

A. sell more cars    B. stop air pollution

C. develop the technology    D. make the life better

3.How the programme help the drivers?

A. The programme buys the drives new cars.

B. The programme helps them buy new cars.

C. It helps the drivers wash the cars.

D. It repairs the drivers’ cars.

4.If some car owners cannot pass the test, they are ________.

A. happy    B. safe

C. obey the law    D. against the law

5.What is the main idea of the passage?

A. What is air pollution.    B. How to stop air pollution.

C. How to stop pollution of cars.    D. Air pollution in the city.