Контрольная работа № 3 по английскому языку для студентов заочного обучения Вариант3

Задание1 Вставьте один из модальных глаголов по смыслу и переведите предложения

1. You have been absent very long. You … be hungry.

2. … I take your book?

3. Take your raincoat it … rain today.

4. They … not translate this article.

5. You … stay home for a week.

Задание 2 Дайте правильный перевод следующих предложений, обращая внимание на инфинитив

1. I am awfully glad to have met you.

2. Nature has many secrets to be discovered.

3. Who is to blame?

4. She is too busy to talk to you.

5. Their house is pleased to look at.

Задание 3 Раскройте скобки, употребляя глагол в Passive или Active

1. You can (to find) information about the life in USA in this book.

2. It seems to me that music (to hear) from the next room.

3. The rule explained by the teacher (to understand) by all of us.

4. We (to call) Zhukovski the father of Russian aviation.

5. The article (to publish) last week.

Задание 4 Переведите предложения, обращая внимание на причастие

1. When sending the telegram she forgot to write her name.

2. The girl writing on the blackboard is our best student.

3. Having descended the mountain they heard a man calling for help.

4. Written in pencil the letter was difficult to read.

5. People living in the city could see a great fire.

Задание 5 Прочитайте и переведите письменно текст, выписывая незнакомые слова.

Plastics

Plastics are substances, natural and artificial, which can be moulded into any desired shape by the application of heat and pressure. Expert for cellulosic, made from chemically modified cotton, wood and other materials, plastics are produced by synthesis from such natural resources as water, air, coal, salt and natural gas.

There are two reasons why man tries to make these materials instead of the ones provided by nature. One reason is his desire either to decrease cost or to compensate for the shortage of the natural product, or both. The second reason is the wish to produce materials with combinations of desirable properties not found in things provided by nature.

There are organic and inorganic synthetics. The difference between organic and inorganic compounds is simply that the former contain carbon, white and the latter do not. One of the most important inorganic synthetic is glass. Because many resource materials are available and many different combinations are possible, the plastics family is very large and is constantly growing larger. Because of their toughness, lightness, chemical resistance and other useful properties as well as the ease of manufacture, plastics products are being used in large quantities in construction, electric and electronic equipment, transportation, agriculture, etc. Synthetic plastics often take the place of metals in machine building and in many respects their properties are higher than that of metals. Russian scientists discovered that some polymers possess really remarkable properties which in some respects are similar to those of iron, although in in a much weaker form. For example, plastics long considered as excellent electrical insulators, can be made to conduct the electricity even as well as some metals. Semiconduction was observed in more than 200 types of plastics, or polymers.

The extensive use of synthetic materials, however, does not mean the natural materials should lose their importance. On the contrary, when combined with synthetic materials they may become even more valuable. However, scientists say that the most typical materials of the future will be various synthetics. These materials, developed by chemists in the past few decades, will occupy a very important place in industry, construction and the home. They really have a bright future.