Listen to Joseph Huang's speech again and write down all the expressions of1) gratitude; 2) persuasion.

Date: 2015-10-07; view: 512.

10. Comment on the following:

1. The frog does not drink up the pond in which he lives.

(Indian proverb)

2. "The greatness of a nation can be judged by the way its animals aretreated."

(Mohandas Gandhi)

3. "The "boundless" blue sky, the ocean which gives us breath andprotects us from the endless black and death, is butinfinitesimallythin film. How dangerous it is to threaten even the smallest part ofthis gossamer covering, this conserver of life."

(Vladimir Shatalov)

11. Develop the text below into a short communication. The communication inex. 7 can serveas an example.

"The most alarming of all man's assaults upon the environment is the contamination of air, earth, rivers and sea with dangerous and even lethal chemicals."

Rachel Carson, Silent Spring

Air pollution is the result of man's use of lethal chemicals, and is a common hazard in both industrial and developing countries. One form of air pollution is acid rain.

Acid rain results from the release into the atmosphere of sulphur oxide and nitrogen oxide. Electrical generating plants, industrial boilers, large smelters, and automobiles are among the chief sources of these emissions. The gases react with water droplets, forming a diluted mixture of sulphuric acid and nitric acid, and it is this mixture that returns to the Earth in the form of acid rain, mist, or snow. Pushed by wind currents, the acid rain often falls to the ground far from its point of origin.

Acid rain is killing vast stretches of forest in Canada, the United States, and central and nothern Europe. In Europe nearly every species of tree is affected. Symptoms include thinning of leaves and nee-

dles deformed growth, and, in some cases death. Acid rain has acidified lakes and streams, rendering them unable to support fish wildlife plants, or insects. In Sweden at least 40,000 of the 90 000 lakes have been affected, and in the United States one in five lakes suffers from this type of pollution.