单选题 Dangerous forms of waste often are created from the chemicals used for industrial processes. During the past few years, with more places of the world industrialize and more new products are produced, the amount of the chemicals has increased seriously. Each year over 80,000 different kinds of chemicals are used in industries, which produce hundreds of millions of tons of harmful waste around the world. It is very difficult and expensive to eliminate these chemicals or to store them in a particular way that doesn't damage human life and the environment.
Harmful waste every year causes many major health problems. However, it is often after some serious event has happened that governments will take actions and cut down the levels of dumped harmful waste. In 1989, a school in New Jersey had to be closed because the students there had suffered too much exposure to chromium(铬). Later it was known that large amounts of chromium had been dumped nearby and blown around the school.
Many researches have been done to get information on the effects of different chemical. Since waste chemicals always have been mixed together, it will also be essential to learn what the influence of the combinations of these chemicals is. It has been realized by some government that the problem is very serious. They are trying to make laws to get rid of harmful waste. They are also trying to make limitation on the amount of industries that often release harmful waste.
Both the governments and public must contribute to the solution. In order to affect policy makers, they can choose not to buy those products that need the production of harmful waste, and produce less harmful waste themselves. It has been said by many scientists that waste production can be reduced. The waste can be cut down by at least one-third by using existing technologies.

单选题 What is the main topic of this passage?
A. The use of some chemicals.
B. Chemicals made by industries.
C. Problems of harmful waste.
D. Events caused by waste chemicals.

单选题 What caused the amount of chemicals that create waste to rise recently?
A. Industrialization occurred in more areas.
B. More new products have been produced.
C. People can hardly eliminate them.
D. Both A and B.

单选题 Which of the following statements doesn't match the solution according to the passage?
A. People choose not to buy products that cause harmful waste.
B. People make use of the existing technologies to reduce the waste.
C. Chemicals used for industrial processes should be banned.
D. The government makes laws to reduce the production of harmful waste.

单选题 What can be learnt from the passage?
A. Chromium does not poison people.
B. Serious pollution caused the local government to close the school.
C. Only two-thirds of the waste can damage the environment.
D. Some governments don't realize how serious the problems are until people suffer a lot from harmful waste.

单选题 Which statement is TRUE according to the passage?
A. Governments should forbid the production of harmful waste.
B. Mixed waste chemicals are easier to be eliminated.
C. Industries mustn't produce chemical waste.
D. Everyone can do something to help solve the problem of waste chemicals.