Вставьте нужные предлоги

1. All rocks are composed ___ minerals.

2. Minerals are ___ great importance ___ the geologists.

3. The oceanic crust is made up ___ dark rocks.

4. Any material which was formed ___ liquid rock is called igneous rock.

5. This area is now covered ___ sedimentary rock.

6. This layer of sedimentary rock lies ___ the igneous and metamorphic rocks of the earth’s crust.

7. The word “metamorphic” comes ___ two Greek words.

Ex.11.

Дополните следующие предложения нужными по смыслу словами из предложенных в рамке.

1. It is believed that some of the molten material cooled ______ the crust.

2. The wind carried away particles of eroded rock and set them down in layers ______ on dry land ______ under the water.

3. The continental crust ______ light rocks, the oceanic crust ______ dark rocks.

4. Minerals are ______ of the earth’s crust.

5. Rocks are classified on the basis of their ______.

6. The term “rock” ______ all the solid constituents of the earth’s surface.

7. The thickness of the earth’s crust under the oceans is ______ than under the continents.

less, consists of, origin, to from, is made up of, either…or, constituents, is referred to.

Ex.12.

Выберите вариант, соответствующий выделенному слову.

1) In some places много carbon dioxide (CO₂) escapes from the earth.

a. many

b. much

c. more

d. most

2) In the world there are много amazing phenomena.

a. many

b. most

c. much

d. more

3) There is very мало free hydrogen present in the earth now.

a. few

b. a few

c. a little

d. little

4) In несколько places Antarctica extends north of the Antarctic Circle.

a. few

b. a few

c. little

d. a little

5) To understand the geological history of the country we must know немного of world geology.

a. few

b. a few

c. little

d. a little

6) There are мало rivers in desert regions.

a. few

b. a few

c. little

d. a little

7) The Antarctica is composed of a continent and много small islands.

a. much

b. many

c. most

d. more

8) Although there is много snow in Antarctica, there is almost no fresh water.

a. much

b. more

c. most

d. many

Ex.13.