考研背诵50篇——27. Scientific Theories

In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic

考研听力基本功4 Passage2

Television has become the main source of informatio [00:03.84]and entertaiment for the average America [00:07.97]It is estimated that by the time a child reaches 1 [00:12.64]he or she has spent almost twice as much time watching TV as in the classroo

考研听力基本功1 Passage4

Many people have criticized television programmin [00:18.39]They complain that it does not challenge the intellec [00:37.59]shows too much violenc [00:47.44]and appeals to the least educated of viewer [01:04.86]in order to get the largest audienc [01

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2016高考英语冲刺作文范文：生态环境对人类的影响

一、哥本哈根联合国气候会议 As world leaders are in Copenhagen (哥本哈根)this month，talks about climate change are gathering steam. But is climate change the most pressing threat(威胁)for mankind? Write an essay to show your opini

2016高考英语冲刺作文范文：中学生应如何过双休日

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2016高考英语冲刺作文范文：雾霾对人类的影响

一、雾霾天气：假如你是李华，你的英国笔友Bill来信询问你家乡是否有雾霾天气，情况如何。请按下面写一封电子邮件： 1.感谢他得关心; 2.介绍情况:(1)去年以来以发生数次雾霾天气(2)人们已

考研背诵50篇——50. Cells and Temperature

Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only within a narrow range around 37C; a departure of a few

考研背诵50篇——41.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 brown, red, or even yellow coats. To the north, the black bear is actually gray or white in color. Even in the same litter, both

考研背诵50篇——42.Coal-fired power plants

The invention of the incandescent light bulb by Thomas A. Edison in 1879 created a demand for a cheap, readily available fuel with which to generate large amounts of electric power. Coal seemed to fit the bill, and it fueled the earliest power statio

考研背诵50篇——40 Cohesion-tension Theory

Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the nineteenth century, the moveme

考研背诵50篇——36.Plate Tectonics and Sea-floor Spreading

The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle. The lithosphere(n.[ 地 ] 岩石圈 )is divided into a few dozen p

AP 2012-07-10

1. Ask anyone to Indian on the east, and they'll tell you simply it hot up there. Temperature is in the triple digits, and the weather is being blamed for at least 24 deaths. 2. Libya is taking a major step toward democracy today. Voters are filling

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爱情影响女性体重变化

Men Make Women Gain Weight 爱情影响女性体重变化 Theres a great reason why a womans weight may fluctuate. Some might say its a hectic work schedule preventing them from getting to the gym. 女性的体重变化受到很多因素的影响。有

CCTV9英语新闻：穿着高跟鞋去赛跑

For many women high-heeled shoes can make them both happy and rather painful. For anyone who's ever worn them, youll know that even walking a long distance can be a struggle. So its hard to imagine running a race in them. Well thats exactly what happ

2016高考英语冲刺作文范文：报考异地大学

由于你的父母执意希望你报考本地名校，请以化名王小二的名义写一封信说服父母同意你报考清华大学 Jan, 1st, 2013 Dear parents, I know its a bit hard/difficult for you to accept my choice to apply to Tsinghua Univ

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