I. Переведите следующие предложения:

А

1. It has long been known that metals can pass from a metallic to an earthy form. 2. It was in 1896 that natural radioactivity was discovered. 3. It is difficult to liberate oxygen from a compound as most of its compounds are very stable. 4. In atomic studies it has become the practice to express energies in electron-volt units. 5. It is the sun that steadily sends out a great amount of radiant energy. 6. It is the steam turbine that has replaced the old reciprocating engine. 7. On a physical map one can see seas, rivers and mountains. 8. The engine stopped; it was badly damaged. 9. A few years ago they had an exhibition of the Indian art in Leningrad. 10. One can still see Magellan’s ship in Spain exhibited ashore in memory of the first journey around the world. 11. The coming winter, they say, will be exptremely cold. 12. One could hardly expect such a turn of circumstances.

B

1. It was they, all the Soviet people who, by their toil and military skill, by their sweat and blood achieved the glorious victories which saved our country from enthrallment. 2. It was with the aim of promoting durable peace and general security in the world that the governments of the USSR and China concluded the treaty. 3. One understands that the rearmament of West Germany is inconsistent with European security. 4. One must not forget about the atrocities committed by the German fascists.

1. It was Lomonosov who first stated that heat phenomena is connected with the motion of molecules. 2. It is the Russian scientist Lenz who established the law of heating effect of the electric current. 3. It was Tsiolkovsky who first designed a wind-tunnel in Russia. 4. It should be noted that a nuclear power plant of 100, 000 kilowatt capacity would consume daily about 200-250 grams of uranium. 5. It was formerly believed that all heavy objects fell faster than light objects. 6. One should be especially careful when working with gamma and beta rays. 7. The winter of 1941 was extremely cold, in fact it was the coldest winter for the previous 10 years. 8. The flax crop, they say, will be fine this year. 9. One can see a great number of beautiful new houses in Moscow. 10. If one wants a thing done, one should do it oneself.