Вопрос № 303812 - Английский язык

Well-developed _____ systems permitted an increase in body size.

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Personal computers (or microcomputers) were made possible by two technical innovations in the field of microelectronics: the integrated circuit, or IС, which was developed in 1959 and the microprocessor that first appeared in 1971. The IС permitted the miniaturization of computer-memory circuits, and the microprocessor reduced the size of a computer’s CPU to the size of a single silicon chip.
Because a CPU calculates, performs logical operations, contains operating instructions, and manages data flows, a complete microcomputer as a separate system was designed and developed in 1974.
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A complete microcomputer as a separate system was designed and developed …

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Farm animals are subjected by broad researches.

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Malignant tumours are usually spread by mosquitoes.

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Laboratory tests should be done to identify the cause of a disease.

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Animal health is essential to the efficient production of animal products.