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I. Translate the sentences paying attention to the Modal Verbs.

1. Scientists can calculate and correct the orbits of sputniks with the help of electronic computers. 2. Thanks to the remote control devices and the radio communication system one person can control the operation of the most complex machinery. 3. The distance between the Earth and the Moon may change. 4. All radio receivers must have three essential parts: a) antenna-to-ground system; b) a detector; c) a speaker or headphones. 5. By means of a special microscope biologists can examine the smallest organisms in their live state. 6. The fourth-year students must regularly inform their Physics instructor of their scientific experiments. 7. Our team must assemble the device.

II. Translate the following sentences into Ukrainian paying attention to the Modal Verbs.

1. In his experimental work any research worker must apply the necessary safety measures. 2. Man can live and work both in a spaceship and outside it in space. 3. Some radio signals may serve as a clue to the chemical processes that take place in outer space. 4. A radio-engineer must know radio, TV and radar equipment perfectly well and must be able to design it. 5. First of all we can and must explore the Moon and other planets with the aid (help) of automatic devices. 6. Scientists, engineers and other experts could calculate the orbits of Sputniks with the help of electronic computers.

III. Translate into Ukrainian paying attention to the Modal Verbs.

1. The sputniks can be used to study the magnetic fields, atmosphere, ionosphere and cosmic radiation. 2. The memory unit of that electronic instrument can remember results, repeat them at the right moment and compare them with the results of another calculation. 3. Radio engineers may use new technological methods and automation to develop micro TV receivers. 4. A digital computer can solve thousands of mathematical operations in one second.

IV. Translate the sentences into Ukrainian, write the figures in words.

1 Benjamin Franklin, an American statesman, scientist and writer was bom in 1706 and died in 1790. 2. Kilocycle (kc.) equals 1,000 cycles while one megacycle equals 1,000,000 cycles. 3. On November 12th, 1970 in accordance with the set programme, the TU-144 supersonic liner developed a speed of 2,430 km per hour at an altitude of 16,960 metres. 4. Approximately (nearly] 1 /4 of the world's scientific workers work in various branches of the economy and culture. 5. The speed of light is 186,000 miles per second. 6. Galileo's telescope had a lens (лінза) only 2.25 inches in diameter. 7. The distance from our Institute to the centre of the city is 2.75 kilometres. 8. The mass of an electron is about 1/1840 of the mass of a hydrogen atom.

V. Write the following in words:

a) numerals: 40; 90; 105:8,300; 3,755,039.

b) fraction: %.; 5%; 25.34; 0.75,

VI. Translate the sentences paying attention to the words in bold type:

1. The experiments carried out by us showed very good results. 2. These results are of great importance. 3. The increase of production results from the use of automation and high-speed methods. 4. The application of machinery results in a great increase of production. 5. The problem set before our scientists is to study the results of the first experiment.