Составьте предложения по образцу, используя слова из обеих колонок
Образец: Conglomerate is formed from gravel. Sandstone Rock salt Mineral oil Shale Peat and coal Igneous rocks Sedimentary rocks Metamorphic rocks through the sedimentation of mineral substances, from sand, from clay minerals, from organic remains, from particles of pre-existing rocks, by the accumulation of plant remains, from magma, from either igneous or sedimentary rocks. 20. Употребите данные в скобках глаголы в соответствующей времен 1. There (to be) three main groups of rocks, namely, sedimen 2. These rocks (to make up) the crust of the Earth. 3. Sedimentary rocks (to be divided) into: mechanical sediments — 4. The particles of consolidated rocks (to be cemented) firmly to 5. Gypsum (to be formed) through sedimentation of mineral 6. It is quite obvious that the textures of igneous rocks (to vary) accord 7. Exposed igneous rocks (to be formed) at various depths. 21. Переведите предложения, обращая внимание на значение
1. Metamorphic rocks have been derived either from igneous or 2. Sediments are formed either at the surface or near the sur Unit 4_______________________________________________ 97 3. Mechanical sediments can be either consolidated or uncon- 4. Igneous rocks are formed as extrusive or as intrusive masses 5. Either of these rocks are very important because they are of 22. Переведите предложения, используя следующие слом и сочетания to consist (of), to be used as fuel, to be dissolved, substance, fuel, as is known, by the action of, to be formed, the Earth's crust, sedimentation 1. Земная кора состоит из осадочных, изверженных и ме 2. Осадочные породы образуются под действием воды, 3. Как известно, каменная соль образуется путем осажде 4. Уголь используется в качестве топлива. 23. а) Найдите в тексте А предложения, в которых сказуемые выражены
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