出国留学网

目录

2017年10月14日托福阅读考试预测

字典 |

2017-10-09 20:08

|

【 liuxue86.com - 托福预测 】

  2017年10月14日的托福阅读考试来临。很多人关心各大网站的预测,那么出国留学网托福栏目小编为您整理了相关资讯,下面是关于2017年10月14日托福阅读考试预测的介绍,欢迎阅读!更多信息请浏览托福栏目。

  2017年10月14日托福阅读考试预测

  天文类Surface Fluids on Venus and Earth

  参考阅读:

  A fluid is a substance, such as a liquid or gas, in which the component particles (usually molecules) can move past one another. Fluids flow easily and conform to the shape of their containers. The geologic processes related to the movement of fluids on a planet’s surface can completely resurface a planet many times. These processes derive their energy from the Sun and the gravitational forces of the planet itself. As these fluids interact with surface materials, they move particles about or react chemically with them to modify or produce materials. On a solid planet with a hydrosphere and an atmosphere, only a tiny fraction of the planetary mass flows as surface fluids. Yet the movements of these fluids can drastically alter a planet. Consider Venus and Earth, both terrestrial planets with atmosphere.

  Venus and Earth are commonly regarded as twin planets but not identical twins. They are about the same size, are composed of roughly the same mix of materials, and may have been comparably endowed at their beginning with carbon dioxide and water. However, the twins evolved differently, largely because of differences in their distance from the Sun. With a significant amount of internal heat, Venus may continue to be geologically active with volcanoes, rifting, and folding. However, it lacks any sign of a hydrologic system (water circulation and distribution): there are no streams, lakes, oceans, or glaciers. Space probes suggest that Venus may have started with as much water as Earth, but it was unable to keep its water in liquid form. Because Venus receives more heat from the Sun, water released from the interior evaporated and rose to the upper atmosphere where the Sun’s ultraviolet rays broke the molecules apart. Much of the freed hydrogen escaped into space, and Venus lost its water. Without water, Venus became less and less like Earth and kept an atmosphere filled with carbon dioxide. The carbon dioxide acts as a blanket, creating an intense greenhouse effect and driving surface temperatures high enough to melt lead and to prohibit the formation of carbonate minerals. Volcanoes continually vented more carbon dioxide into the atmosphere. On Earth, liquid water removes carbon dioxide from the atmosphere and combines it with calcium, from rock weathering, to form carbonate sedimentary rocks. Without liquid water to remove carbon from the atmosphere, the level of carbon dioxide in the atmosphere of Venus remainshigh.

  Origin of the Solar System

  Comets

  文化艺术类

  The Origins of Writing

  Live Performance

  The Origins of Theater

  The Development of Printing

  地质类

  Early Theories of Continental Drift

  Attempts at Determining Earth’s Age

  How Soil is Formed

  Earth’s Energy Cycle

  Thermal Stratification

  环境类

  The Climate of Japan

  The Role of the Ocean in Controlling Climate

  经济类

  Effects of the Commercial Revolution

  Seventeenth-Century European Economic Growth

  考古类

  Environmental Impact of the Anasazi

  The Collapse of the Mays

  The Chaco Phenomenon

  科学类

  The Birth of Photography

  Early American Printing Industry

  农业类

  Agricultural Society in Eighteenth- Century British America

  Water Management in Early Agriculture

  社会类

  Population Growth in Nineteenth-Century Europe

  Hunting and the Setting of Inner Eurasia

  生物类

  Extinctions at the End of the Cretaceous

  The Cambrian Explosion

  The Extinction of the Dinosaurs

  How Animals in Rain Forests Make Themselves Heard

  Sociality in Animals

  Dinosaurs and Parental Care

  Habitat Selection

  Temperature Regulation in Marine Organisms

  Cell Theory

  Poikilotherms

  Forest Succession

  The Role of Diapause

  The Identification of the Genetic Material

  How Plants and Animals Arrived in the Hawaiian Islands

  Constraints on Natural Selection

  想了解更多托福预测网的资讯,请访问: 托福预测

本文来源:https://toefl.liuxue86.com/t/3411643.html
延伸阅读
2020年2月16日托福考试预测
托福预测是很多同学在考前必看的,这样既可以看看自己的水平怎么样,而且,说不定真的可以帮上忙,那么下面就和出国留学网来看看2020年2月16日托福考试预测。2020年2月16日托福考
2020-01-15
托福预测是很多同学在考前必看的,这样既可以看看自己的水平怎么样,而且,说不定真的可以帮上忙,那么下面就和出国留学网来看看2020年2月16日托福写作考试预测。1.Doyouagre
2020-01-15
托福预测是很多同学在考前必看的,这样既可以看看自己的水平怎么样,而且,说不定真的可以帮上忙,那么下面就和出国留学网来看看2020年2月16日托福阅读考试预测。ModelsofEgg
2020-01-15
托福预测是很多同学在考前必看的,这样既可以看看自己的水平怎么样,而且,说不定真的可以帮上忙,那么下面就和出国留学网来看看2020年2月16日托福口语考试预测。Task11.Doyo
2020-01-15
托福预测是很多同学在考前必看的,这样既可以看看自己的水平怎么样,而且,说不定真的可以帮上忙,那么下面就和出国留学网来看看2020年2月16日托福听力考试预测。题目1.Whydoes
2020-01-15
选择出国留学的同学们肯定是要考托福或者雅思的,那么托福一般的题型是怎么样的大家都知道吗,下面和出国留学网小编一起来看看2019年12月14日托福阅读考试预测。真题来源:2015-8
2019-12-10
托福的考试眼看就要来临,很多考生会找一些预测题目做一做,预测题目怎么样呢?想必是不少出国人士感兴趣的话题,和出国留学网托福栏目一起来了解2019年10月26日托福阅读考试预测,欢迎
2019-10-21
2019年10月12日的托福考试只有半个月了,同学们感觉对于这一次的托福考试有没有把握呢?在这个最后的冲刺阶段,同学们就和出国留学网来看看2019年10月12日托福阅读考试预测。P
2019-09-23
想要考托福的同学看过来了,10月份的最新一次的托福考试也很快就要来了,那么和出国留学网小编一起来看看2019年10月19日托福阅读考试预测。P1:TheOldStoneAgeist
2019-10-14
托福预测是很多同学在考前必看的,这样既可以看看自己的水平怎么样,而且,说不定真的可以帮上忙,那么下面就和出国留学网来看看2019年8月10日托福阅读预测。ModelsofEggDe
2019-07-16