34. Определите, какие функции в предложении выполняют совпадающие по форме выделенные слова. Переведите предложения:

1. The term "prospecting" includes the whole range of geologi­cal work directed to discovering deposits of valuable minerals. The Moscow Mining Academy directed the activities of the Academy's research institutions.

Ш Unit 5

2. Limestones occupied vast areas of the Earth's surface. It is quite obvious that the regions occupied by limestones have been covered by seas.

3. Modern deposits of Kamchatka volcanoes investigated by Russian geologists show that volcanism is active there. The Institute of Volcanology of the Siberian Department of the Academy of Sciences investigated friable (рыхлый) volcanic deposits of Kamchatka.

4. The clayey mass obtained by the decomposition of orthoclase is white and is called kaolin. Chemists obtained phosphorus from phosphorite.

35. Переведите предложения, обращая внимание на перевод причастия прошедшего времени.

Образец 1: The mining method used depends on many factors. -» Используемый метод разработ­ки зависит от многих факторов.

1. The problems discussed are connected with the investigations of the Earth's crust depths.

2. Metamorphic rocks described represent the oldest part of the Earth's crust.

3. The process of metamorphism mentioned above creates such minerals as tremolite, sillimanite and others which are uncommon in sedimentary and igneous rocks.

4. In all the mines visited automated computerised control sys­ tems were used.

5. A new system of planning employed gives an opportunity of supplying correct information quickly which is essential for man­ agement control of modern mines.

Образец 2: When burnt, coal produced heat. -> При сжигании уголь выделяет тепло.

1. If disturbed, rocks cleave easily into separate plates.

2. When needed the additional experiments are carried out.

3. When subjected to pressure, heat and chemically active fluids, various rpcks in the Earth's crust are transformed into metamor- phic rocks.

36. Найдите в тексте б и выпишите причастия прошедшего времени в функции правого определения.

37. Переведите предложения, используя сочетания слов:

to be formed; to belong to; to be like; to be of value; to give an opportunity

Unit 5 133

of; unlike; to be of importance; pre-existing rocks; schistose structure; to determine

1. Метаморфические породы образовались из извержен-ных и осадочных пород.

2. Гнейс, сланец, мрамор и другие породы относятся к группе метаморфических пород.

3. Гнейс похож на гранит, но, в отличие от гранита, он имеет слоистую структуру.

4. Вообще говоря, описанные метаморфические породы имеют большое значение, так как их структура дает возмож­ ность установить следы существовавших ранее пород.

38. Задайте вопросы по образцу.

Образец: Metamorphic rocks are mostly found in the regions of mountain belts, (where?) -> Where are meta-morphic rocks mostly found?

1. Metamorphic rocks have been developed from earlier igne­ ous and sedimentary rocks, (what rocks?)

2. The constituents of gneisses are distributed in bands or layers. (how?)

3. Mica and chlorite cause the rock to split into thin sheets, (what materials?)

4. The structure of metamorphic rocks is of importance, (why?)