Once out of the earth’s gravity, the astronaut is ________ by the problem of weightlessness.
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From the reign of ______________, the Empress moved out of the Palace of Earthly Tranquility.
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In the US, a panel of government experts was once intended to be established to cut out unnecessary treatment.
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According to Aristotle’s theory, everything is made out of four ______: earth, air, fire, and water.
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__________most of the earth‘s surface is covered by water, fresh water is very rare and precious.
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听力原文:I do think you ought to get a small computer for your business. It would do most of the routine tasks in a tenth of the time you spend on them now. Then you'd have time to do other things. You'd soon wonder how on earth you ever managed with-out one.
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In the case of loans, the whole amount advanced is at once credited to the customer ’s ___.
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Find out the topic of each sentence. Smoking is harmful to people’s health in varied ways
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)is the orbit of a geosynchronous sateHite whose circular and direct orbit lies in theplane of the Earth’s equator, and it is approximately 35,786 kilometers above the equator.
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Stephanopoulos pointed out that the number of today's natural disasters is about ______ limes more than that of the 1960s.
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It has been estimated that the earth’s surface temperature has increased ________ one quarter to three quarters of a degree since 1805.
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Once you can't see any use out of the word you take at random, ______.
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Viewed from a star in some other comer of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light of our sun. While our neighbors Venus and Mars would reflect a fairly even glow, Earth would put on a little show. Earth's light would brighten and dim as it spins, because oceans, deserts, forests and clouds—which are all too small to be seen from such a distance-reflect varying amounts of sunlight. The variations, it turns out, are so strong and distinctive that surprising amount of information could be taken from a simple ebb and flow of light. Scientists at Princeton University and the Institute for Advanced Study conducted a detailed study of Earth's reflections as a way for human scientists to learn about distant planets that may be like our own.
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4. Which statement is true about the earth’s movement? A. The earth spins and travels around the sun at the same time. B. One day is the time it takes the earth to travel around the sun once. C. One year is the time it takes the earth to spin around once. D. It is impossible to measure the earth’s movement.
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The primary cause of all changes in the Earth’s weather is
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The letter to point out a mistake by the letter’s recipient is called the letter of_()
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()is the orbit of a geosynchronous satellite whose circular and direct orbit lies in the plane of the Earth’s equator,and it is approximately 35,700 kilometers above the equator
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The lighting in Jake’s Steak Restaurant is dim. The chairs are covered in leather and each table is covered with a white linen cloth. The colors are limited to earth tones with an occasional splash of
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There was once an idea that the Earth was flat and motionless.
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