1
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pen…lin
2
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sew…ng ma..ine
3
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l…ght bul…
4
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vac…m cl…ner
5
Grammar practice
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In 1915 he … as a president of the U.S. Navy Consulting Board.
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Eddisson achived his greatest successes in this laboratory and he …
the “ Wizard of Menlo Park”.
7
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The telescope … Galileo.
8
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Today coffee…in several countries in the world
9
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The future …to bring a great many of new application for semiconductors.
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The law of gravity…Issak Newton.
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A number of various complicated problems … the help of computers
12
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Electronic devices…to control the stream of electronics.
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