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Because of it consists only of a relatively strand of DNA protected by a shell of Protein, the virus cannot eat or reproduce by itself.

Choose the answer to complete each unfinished sentence, substitutes the underlined part.

While her husband was in the army, Janet________ to him twice a week.

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Every scientist knows that gravity is the force that maintains the earth and the planets than orbits around the Sun.

His........son will go to school this fall.

Choose the correct answer to complete the sentence. "You can teach a child _____ him ever coming to school"

Are you fond of…………………. this film?

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Duke University in North Carolina has  an outstanding collecting documents concerning Southern history.

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I’m trying to save up for  Canada trip, so I can’t afford buying much at the moment.

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For many years, people have wondered  that if life exits elsewhere in the universe.

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There is a hostel at the bottom of canyon where we can stay there .

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The builders of variety ancient cliff ruins scattered throughout the canyons and mesas of the arid southern of the United States are known as the cliff dwellers

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Because not food is as nutritious for a baby as (its mother’s milk, many women return to the practice breast feeding.

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These engines used  being started with hand. But now they are started by electricity.

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Inventing by Roger Bacon, the magnifying glass has led to creation of other scientific tools which have produced immeasurable scientific progress.

Choose the word(s) CLOSEST in meaning to the following word(s). "reliable"

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Generally speaking, magnitude 1.0 earthquake on Richter scale is detected by instruments but not person.

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No decision will be made about my future appointment until many suitable candidates had been interviewed.

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This will have some serious effect about agriculture

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After George had returned to own house, he was reading a book.

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Nobody was watching , so the little boy took the packet of candies from shelf and putting it in his pocket

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Without alphabetical order, dictionaries would be impossibility to use.