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新东方优美背诵短文50篇 Unit50:CellsandTemperature
新东方优美背诵短文50篇 Unit50:CellsandTemperature50. Cells and Temperature Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective2007-08-21 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit49:Sleep
新东方优美背诵短文50篇 Unit49:Sleep49 Sleep Sleet is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper2007-08-19 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit48:Bacteria
新东方优美背诵短文50篇 Unit48:Bacteria 48 Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micr2007-08-18 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit47:Folk Culture
新东方优美背诵短文50篇 Unit47:Folk Culture47 Folk Cultures A folk culture is a small isolated, cohesive, conservative, nearly self-sufficient group that is homogeneous in custom and race with a stron2007-08-17 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit46:Vision
新东方优美背诵短文50篇 Unit46:Vision46.Vision Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to2007-08-16 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit45:The Source of Energe
新东方优美背诵短文50篇 Unit45:The Source of Energe45.The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun’s ve2007-08-15 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit44:Obtaining Fresh water from icebe
新东方优美背诵短文50篇 Unit44:Obtaining Fresh water from icebergs44.Obtaining Fresh water from icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid r2007-08-15 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit43:Statistics
新东方优美背诵短文50篇 Unit43:Statistics 43.Statistics There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping2007-08-13 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit42:Coal-fired power plants
新东方优美背诵短文50篇 Unit42:Coal-fired power plants42.Coal-fired power plants The invention of the incandescent light bulb by Thomas A. Edison in 1879 created a demand for a cheap, readily availabl2007-08-12 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit41:American Black Bears
新东方优美背诵短文50篇 Unit41:American Black Bears41.American black bears American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these brow2007-08-11 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit40:Cohesion-tension Theory
新东方优美背诵短文50篇 Unit40:Cohesion-tension Theory40 Cohesion-tension TheoryAtmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequ2007-08-10 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit39:The Salinity of Ocean Waters
新东方优美背诵短文50篇 Unit39:The Salinity of Ocean Waters39 The Salinity of Ocean WatersIf the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Neverthele2007-08-09 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit38:Topaz
新东方优美背诵短文50篇 Unit38:Topaz38 TopazTopaz is a hard, transparent mineral. It is a compound of aluminum, silica, and fluorine. Gem topaz is valuable. Jewelers call this variety of the stone “p2007-08-08 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit37:Icebergs
新东方优美背诵短文50篇 Unit37:Icebergs37 IcebergsIcebergs are among nature’s most spectacular creations, and yet most people have never seen one. A vague air of mystery envelops them. They come into2007-08-07 编辑：alex 标签： 我来听写
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新东方优美背诵短文50篇 Unit36:Plate Tectonics and Sea-floor Sp
新东方优美背诵短文50篇 Unit36:Plate Tectonics and Sea-floor Spreading36.Plate Tectonics and Sea-floor SpreadingThe theory of plate tectonics describes the motions of the lithosphere, the comparativel2007-08-06 编辑：alex 标签： 我来听写
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