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50. Определите значение сочетаний глаголов с послелогами:

to look at the geological map, to look for a mineral deposit, to work out a new plan, to work on a difficult problem (programme), to be made up of partings, to find out all about the mode of occurrence of a mineral, to crop out at the surface, to search for ores, to touch upon the methods of prospecting, to carry out research..

51. Подберите е глаголам из списка а существительные из списка б. Переведите полученные сочетания слов на русский язык:

А. Б.

1. to discover a) oil and gas

2. to drive b) valuable minerals

3. to extract c) a proper method

4. to estimate d) new coal-fields

5. to choose e) crosscut (adit, drift)

6. to determine f) the cost of the project

7. to sink g) holes

8. to search (for) h) lead and copper

9. to take i) reserves

10. to smelt j) samples

11. to drill k) iron ore

52. Назовите номера предложений, в которых местоимение It 1) является формальным подлежащим, 2) заменяет ранее упомянутое существительное:

1. Coal is used as a fuel. It is also important as the source of coke for the steel industry.

2. It is possible to explore very gently sloping seams by bore­ holes.

3. It is due to Karpinsky's work that we know the origin of the coal in the Donets Basin.

4. It should be noted that there exist surface (ground) and aerial prospecting methods.

5. Oil occurred at great depths and it was difficult to search for it.

53. Переведите предложения, обращая внимание на перевод союзов either ... Or, neither ... Nor.

Either – тот или другой, и тот и другой, neither – ни тот ни другой, ни один (из них), either ... or – либо … либо, или … или, neither ... nor – ни … ни.

1. Depending on the geological conditions either adits or boreh­oles can be driven into the deposit.

2. When working steep seams under thick overburden neither trenches nor adits can be used.

3. Neither the thickness of overburden nor the angles of dip and strike were determined correctly.

4. At present either surface or aerial methods of geological pros­pecting can be used.

5. Neither faults nor fissures were found by the surveyors.

54. Переведите предложения, обращая внимание на перевод инфинитивного оборота «сложное подлежащее»:

1. Oil is known to be one of the most important sources of energy.

2. Petroleum is believed to have been formed from decaying vegetable and animal remains.

3. Drilling is considered to be the principal exploration method and it is widely used when deposits are of large dimensions.

4. Until recently a depth of 50-ft overburden was considered to be the maximum.

5. Coal is still the most important fuel and is likely to remain the main source of energy for years to come.

6. Neighbouring coal beds seemed to be sloping gently.

7. The computerized systems of planning and control proved to be reliable.

55. Выпишите из текста 6 предложения, в которых употребляются инфинитивные обороты «сложное подлежащее», «сложное дополнение». Переведите их.