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托福阅读TPO34(试题+答案)第3篇:昆虫保护植物
【1】Many plants - one or more species of at least 68 different families - can secrete nectar even when they have no blossoms -
托福阅读TPO34(试题+答案)第2篇:水电的发展
【1】By the eighteenth century, Britain was experiencing a severe shortage of energy. Because of the growth of population -
托福阅读TPO34(试题+答案)第1篇:伊斯兰宗教艺术
【1】The arts of the Islamic book, such as calligraphy and decorative drawing, developed during A.D. 900 to 1500, -
托福阅读TPO33(试题+答案+译文)第3篇:灭绝事件
【1】It was not until the Cambrian period, beginning about 600 million years ago, that a great proliferation of macroscopic species occurred on Earth and produced a fossil record that allows us to tr... -
托福阅读TPO33(试题+答案)第2篇:铁路和商品化农业
【1】By 1850 the United States possessed roughly 9,000 miles of railroad track; Ten years later it had over 30,000 miles, -
托福阅读TPO33(试题+答案)第1篇:最初的文明
【1】Evidence suggests that an important stimulus behind the rise of early civilizations was the development of settled agriculture -
托福阅读TPO32(试题+答案)第3篇:热带蜂群的分布
【1】In 1977 ecologists Stephen Hubbell and Leslie Johnson recorded a dramatic example of how social interactions can produce and enforce regular spacing in a population. -
托福阅读TPO32(试题+答案)第2篇:Siam,1851-1910
【1】In the late nineteenth century, political and social changes were occurring rapidly in Siam (now Thailand). -
托福阅读TPO32(试题+答案)第1篇:Plant Colonization
【1】Colonization is one way in which plants can change the ecology of a site. Colonization is a process with two components: invasion and survival. -
托福阅读TPO31(试题+答案+译文)第3篇:Savanna Formation
【1】Located in tropical area at low altitudes, savannas are stable ecosystems, some wet and some dry consisting of vast grasslands with scattered tree or shrubs. -
托福阅读TPO31(试题+答案+译文)第2篇:Early Children Education
【1】Preschools—educational programs for children under the age of five—differ significantly from one country to another according to the views that different societies hold regarding the purpose of ... -
托福阅读TPO31(试题+答案+译文)第1篇:Speciation in Geographically
【1】Evolutionary biologists believe that speciation, the formation of a new species, often begins when some kind of physical barrier arises and divides a population of a single species into separate... -
托福阅读TPO30(试题+答案+译文)第3篇:The Invention of the Mechanic
【1】In Europe, before the introduction of the mechanical clock, people told time by sun (using, for example, shadow sticks or sun dials) and water clocks. -
托福阅读TPO30(试题+答案+译文)第2篇:The Pace of Evolutionary Chan
【1】A heated debate has enlivened recent studies of evolution. Darwin's original thesis, and the viewpoint supported by evolutionary gradualists -
托福阅读TPO30(试题+答案+译文)第1篇:Role of Play in Development
【1】Play is easier to define with examples than with concepts. In any case, in animals it consists of leaping, running, climbing, throwing, wrestling, and other movements, either along, with objects...
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频道本月排行
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托福阅读TPO33(试题+答案)第1篇:最初
【1】Evidence suggests that an importa -
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托福TPO-25 Lecture 2(上)
这些音乐篇幅很长,感情充沛。这些音乐理应具有磅礴的气势。在1900年早期 - 3
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