Образуйте от прилагательных, стоящих в скобках, сравнительную или пре- восходную степень, в зависимости от смысла.
1. The Trans-Siberian railway is (long) in the world.
2. The twenty-second of December is the (short) day of the year.
3. Iron is (useful) of all metals.
4. The Neva is (wide) and (deep) than the Moskva River.
5. Elbrus is the (high) peak in the Caucasian mountains.
6. His plan is (practical) than yours.
7. His plan is (practical) of all.
8. This room is (small) than all the rooms in the house.
9. London is the (large) city in England.
10. Silver is (heavy) than copper.
11. Our house is (low) than yours.
12. This exercise is (good) than the last one.
13. My cigarettes are (bad) than yours.
14. Yesterday was the (hot) day we have had this summer.
15. When the war ended, the reconstruction of Moscow was resumed on a (large) scale than before.
16. The Battle of Stalingrad was the (great) battle of all times.
Since ancient times Nature has served Man, being the source of his life. For thousands of years people lived in harmony with environment and it seemed to them that natural riches were unlimited. But with the development of civilization man's interference in nature began to increase.
Large cities with thousands of smoky industrial enterprises appear all over the world today. The by-products of their activity pollute the air we breathe, the water we drink, the land we grow grain and vegetables on.
Every year world industry pollutes the atmosphere with about 1000 million tons of dust and other harmful substances. Many cities suffer from smog. Vast forests are cut and burn in fire. Their disappearance upsets the oxygen balance. As a result some rare species of animals, birds, fish and plants disappear forever, a number of rivers and lakes dry up.
The pollution of air and the world's ocean, destruction of the ozone layer is the result of man's careless interaction with nature, a sign of the ecological crises.