Прочитайте текст и заполните пропуски подходящими по смыслу словами A dental mechanic while 1 ______...: ответ на тест 284230 - Английский язык

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A 1_______ mechanic while studying at the “Orthopedic 2_______” departments a future specialist learns to make artificial 3_______ and crowns, plastics and porcelain teeth. On graduating from the college they usually work in the dental mechanic 4_______.

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A 1_______ mechanic while studying at the “Orthopedic 2_______” departments a future specialist learns to make artificial 3_______ and crowns, plastics and porcelain teeth. On graduating from the college they usually work in the dental mechanic 4_______.

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Sometimes there is an opening between the 1 _______ and the left side of the heart, or even between the aorta and pulmonary artery.
2 _______ depend on the type of heart 3 _______. Sometimes, the defect is picked up on a routine examination; at other times there may be breathlessness, difficulty in walking or running, swelling of feet and puffiness of face, and later of the whole 4 _______. Some these anomalies can be surgically corrected.

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Electronics is a rather young 1____________. It belongs to the twentieth сentury. Within a short period it has become a powerful means of progress.
Electronics surrounds us everywhere. Television, radio-receiving, tape-recording — are all based on 2_____________. The ideas of electronics are embodied in 3______________ technology and means of automation, biology and genetics which have 4______________ biotechnology as a new branch of the national economy.

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Electronic computers are widely used in scientific 1______________, in planning and controlling our national economy. Very complicated 2______________ systems control the work of huge plants and power stations; even whole industries are 3______________ by electronic robots. Planes and rockets are also electronically controlled.
4______________ has sharpened our vision and given us chance to see the microworld more clearly. It helps us discover new and puzzling phenomena of nature.

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Due to electronics the first man-made 1_____________ was launched into space, and now man has already set his foot on the Moon, sends probes to distant planets. Radioelectronic 2______________ ensure reliable communication with space probes at distances of millions of kilometers, relay 3_______________ of distant planets. The greatest 4______________ of electronics is in the field of communications.