恐龙死亡导致鱼类增多

Dinosaur Death Leads to Rise of Fish 恐龙死亡导致鱼类增多 Tens of millions of years ago, an asteroid hit what is now the Yucatan Peninsula of Mexico. The event led to a global mass extinction that has been linked to the end of the dinosaurs

地球？火球？

It's a slow drip, but it's melting glaciers and we are to blame. That's according to a new research which finds the earth is now the hottest since it has been in 400 years and potentially the last 200

SSS 2008-09-24

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres a Native American site in Ohio that appeared to be a fort. But recent discoveries by archaeologists at the University of Cincinnati show thats n

侏罗纪搏击俱乐部 第71期:恐龙巨大的咬合力

As investigators studied the large serrated teeth of the giant shark, they discovered the massive power of its bite - a force of 20 tons. 在调查者研究这些巨鲨的大型锯齿状牙齿时，他们发现了它巨大的咬合力可达二十吨。

VOA标准英语2008年-US Chemical Giant Faces Hurdles in India Due to

By Steve Herman Bhopal, India 08 January 2008 Dow Chemical, the world's second-largest chemical manufacturer, is facing difficulties trying to expand in India. The company is haunted by the 1984 leak of methyl isocyanate, one of the most lethal chemi

SSS 2010-04-09

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. As scientists delve deeper beneath the oceans surface, they find bizarre creatures that have adapted to harsh and extreme environments. Now comes a new o

医学设备英文词汇

Urine Analyzer 尿液分析仪 blood sugar（glucose ） analyzer血糖分析仪 test strip 测试条 reagent 试剂 Semi-automatic Biochemical Analyzer半自动生化分析仪 Automatic Blood Cell Analyzer全自动血细胞分析仪 Urine sediments

托福阅读:在阅读中感受文章风格的不同

托福阅读:在阅读中感受文章风格的不同 1、托福阅读文章来源于哪里? 所有的托福阅读文章都是语言枯燥无味、措词准确精妙、风格独树一帜。因为所有的托福阅读文章都选自美国的大中学校的

美国学生人类历史第4期:人类历史舞台的形成(1)

Chapter 1 第一章 The Setting of the Stage 人类历史舞台的形成 We live under the shadow of a gigantic question mark. 人类一直以来都生活在一个巨大问号的阴影下面 Who are we? 我们是谁？ Where do we come from? 我们从哪

澳科学家警告海平面上升问题

CANBERRA, Oct. 14 (Xinhua) -- Australian scientists have made the alarming discovery that sea levels have risen more in the past century than at any other comparable period in the past 6,000 years. Researchers from the Australian National University

英文歌曲:Chemical Rush

Chemical Rush Brian Mcfadden Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white Feel it coming on Like a pulse in my head Sending chills right

万物简史 第507期:丰富多彩的生命(3)

We wandered through a confusion of departments where people sat at large tables doing intent, 我们漫步穿过一个又一个部门，只见人们坐在大桌子跟前， investigative things with arthropods and palm fronds and boxes of yellowed bo

万物简史 第460期:生命在前进(2)

Only about one bone in a billion, it is thought, ever becomes fossilized. 据认为，在10亿根骨头当中，只有大约l根能变成化石。 If that is so, it means that the complete fossil legacy of all the Americans alive todaythat's 270 mill

万物简史 第428期:生命的起源(22)

Mitochondria manipulate oxygen in a way that liberates energy from foodstuffs. 线粒体支配着氧，释放食物中的能量。 Without this niftily facilitating trick, life on Earth today would be nothing more than a sludge of simple microbes. 没有

万物简史 第418期:生命的起源(12)

We are all the result of a single genetic trick handed down from generation to generation nearly four billion years, 我们都是同一遗传戏法的结果。那种戏法一代一代地传下来，经历了差不多40亿年， to such an extent that

英语歌曲:音乐+爱情的化学反应-Chemical Rush

音乐+爱情的化学反应：Chemical Rush Artist：Brian Mcfadden Song：Chemical Rush Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white F

英语摇滚:音乐+爱情的化学反应：Chemical Rush

音乐+爱情的化学反应：Chemical Rush 还是Brian Mcfadden小编对BB的新专辑实在不能不执着啊~这首依旧是混杂了电子风的Chemical Rush，稍微有些中规中矩，和专辑中电音味道更重的歌比起来，有些收敛

万物简史 第388期:浩瀚的海洋(7)

In the 1830s, the British naturalist Edward Forbes surveyed ocean beds throughout the Atlantic and Mediterranean 19世纪30年代，英国博物学家爱德华福布斯勘察了大西佯和地中海各处的海床， and declared that there was no li

万物简史 第290期:砰!(25)

As one commentator has put it, fleeing would mean selecting a slow death over a quick one. 有一位评论家说，逃跑意味着在慢死和快死之中选择慢死。 The death toll would be very little affected by any plausible relocation effort,

万物简史 第254期:大地在移动(8)

There was one other major problem with Earth theories that no one had resolved, or even come close to resolving. That was the question of where all the sediments went. Every year Earth's rivers carried massive volumes of eroded material500 million to