Помогите по ENGLISH

Упражнение 17. Просмотрите текст 2А и ответьте на вопросы.

1. What is this text about? 2. What is ecology? 3. How does water (air) become polluted? 4. Why is the problem of water pollution becoming a global problem?

Упражнение 18. Найдите предложения с глаголом-сказуемым в Present Continuous, переведите.

1. Water and air are becoming more and more polluted. 2. At present computers are more widely used in the sphere of education.

3.Where were you at six o’clock? We were studying in the reading-room. 4. There are government and public organizations that are analysing data on land, forest and air. S. New courses of education such as management are being organized in many institutes. 6. What will you be doing in the laboratory tomorrow morning? We shall be watching the operation of a new device. 7. Measures are being taken to save Lake Baikal. 8. The situation at Lake Baikal is remaining very serious. 9. Much attention is being paid at present to the development of international scientific contacts. 10. Science is becoming a leading factor in the progress of mankind.

Упражнение 19. А. Найдите предложения с глаголом-сказуемым в Continuous Passive, переведите.

1. Cambridge University was formed in the 12th century. 2. The solution of ecological problems may be achieved only by joint efforts of all countries. 3. Great changes in people’s lives and work were brought about by the scientific and technological progress. 4. The theory of interaction of atmospheric and oceanic processes is being developed to determine the weather of the planet. 5. The teachers at Cambridge are called «dons» or «tutors». 6. Computers and lasers are being widely introduced at plants and factories. 7. The most important ecological problems must be considered at the government level. 8. The training at Cambridge and Oxford is carried out by tutorial system.

В. Переделайте предложения из действительного в страдательный залог.

1.Не is writing a letter at the moment. 2. John was preparing report all day yesterday. 3. We are learning grammar now. 4. At present mankind is making considerable investments to eliminate air pollution. 5. Today the changes in the global climate and water balance are bringing about serious changes in the environment. 6. Many scientists are constantly carrying out experimental work to solve the problem of environment protection. 7. The company is making plans for the future.