Industrial pollution is not only a problem for the countries of Europe and North America but also an extremely serious problem in some developing countries. For these countries, economic growth is a very important aim. They want to introduce industries, and so they put few controls on the industries which cause pollution.
Cubatao, an industrial town of 85 000 people in Brazil, is an example of the connection between industrial development and pollution. In 1954, Cubatao had no industry. Today it has more than twenty large factories, which produce many pollutants. The people of the town are suffering from the poisonous matter in their environment and the bad effects can be clearly seen. Birth shortcomings are extremely common. Among children and adults, lung problems are sometimes twelve times more common in Cubatao than in other places.
It is true that Brazil, like many other countries, has laws against pollution, but these laws are not enforced strictly enough. It is cheaper for companies to take no notice of the laws and pay the fines than to buy the expensive equipment that will reduce the pollution. It is clear, therefore, that economic growth is more important to the government than to the health of the workers. However, the responsibility does not completely lie with the Brazilian government. The example of Cubatao shows that international companies are not acting in a responsible way either. A number of the factories in the town are owned by large companies from France, Italy, and the US. They are doing things in Brazil that they would not be able to do at home. If they caused the same amount of pollution at home, they would be severely punished or even put out of business.

Why don’t developing countries have strict pollution controls

A. The new industries they want to introduce do not cause much pollution.
B. Pollution is not a serious problem for developing countries.
C. They don’t realize the balance of nature will be destroyed by some pollutants.
D. If they put stricter controls on industry, fewer companies would build new plants in developing countries.

我国国有经济在石化、石油、电力等领域的销售收入中占大多数，国有及国有控股企业在集成电路、生物医药等关系国家综合经济实力的重要基础设施建设和高新技术产业领域也占了大多数。这表明（）

A.国有经济是国民经济的基础

B.国有经济是国民经济的主导

C.国有经济支配所有行业和领域

D.国有资产在社会总资产中占优势