人教高中英语高二下UNIT13-1

THE PROPERTIES OF WATER Earth is an ocean planet. About three billion years ago, life on our planet began in the deep blue seas. Ninety-nine percent of the living space on earth is in the oceans. Marine life is incredibly rich and varied. There are

北师大版高中英语模块7--Unit 22 lesson1-2

[00:00.80]When the atmospheric concertrations [00:03.16]of these gases increase, however, [00:05.84]more heat is trapped and the Earth's [00:07.92]temperature rises. [00:10.37]Over the last 100 years, [00:13.01]the global average temperature [00:15.1

美国国家公共电台 NPR NASA Probe Lands Safely On Martian Surface

MICHEL MARTIN, HOST: Mars is about to get a new visitor from Earth tomorrow. If all goes well, a NASA probe called InSight will land near the Martian equator. Its mission is to study the interior of the planet. But, before it can carry out its missio

SSS 2011-03-29

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

英文书摘精选 How Does Ice Cool Drinks?冰块是如何使饮料冷却的?

Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? 有件事情我们总觉得理所当然：室温下把一些冰块放入水中，

Horizon - Life On Mars 火星生命 - 14

Well, hearing that Odyssey had found subsurface water on Mars was enormously exciting for somebody who is involved in planning to send humans to Mars. Water has a number of important uses for us. At t

Drying Food

Broadcast: Jan 21, 2003 By Gary Garriott Drying food is a simple, low-cost way to keep food safe for eating. Drying removes water that small organisms use to break down food into other substances. Som

万花筒 2013-07-04&07-08 探索太阳：NASA发射一颗新型太阳观测卫星

-Im Chris Kaufman and I here with Justin Kasper, who works at Smithsonian, hes an astrophysicist at the Smithsonian. And he's won a project thats gonna launch a probe at the sun, specifically the Solar Wind Electrons Alphas and Protons investigation,

美国科学60秒 SSS 2012-10-15

This is Scientific American-60 Second Science. I am Christopher Intagliata. Gotta a minute？ Hair helps keep you warm, right? But hair can also keep you cooler than bare skin, as long as the hair is not too thick. So says a study in a journal-Plus O

美国科学60秒 SSS 2012-10-12

Hair helps keep you warm, right? But hair can also keep you cooler than bare skin, as long as the hair is not too thick. So says a study in the journal PLoS ONE. Researchers studied elephants, which have very thin coats of hair. It's easy for the bea

高中课本听力人教版 第二册课本13

The Properties Of Water Earth is an ocean planet．About three billion years ago，life on our planet began in the deep blue seas．Ninety-nine percent of the living space on earth is in the oceans．Marine life is incredibly rich and varied． There

VOA标准英语2009-Scientists Discuss Climate Change at World Ocean

Scientists and politicians have gathered in the Indonesian city of Manado for the World Ocean Conference. They are discussing the role of oceans in mitigating climate change and how climate change affects the world's seas, but their efforts are hamp

2018年CRI Zhoushan Port, a bounded fuel filling center

The Streaming down the Yangtze team is now at Ningbo-Zhoushan Port, which is the starting point of the Maritime Silk Road. In 2017, the port's throughput capacity was registered at 1 billion tons, and was the busiest port in the world in terms of car

英语听力：自然百科 神奇水世界 Water-11

It's just magic. When you follow it, you can see that this is the perfect union of the tree and the villages. The locals have kind of trained the roots, kind of guided them through and netted them together. What they've done here is they've grabbed s

AGRICULTURE REPORT - Solar Food Dryers

AGRICULTURE REPORT - Solar Food Dryers By Gary Garriott Broadcast: Tuesday, March 01, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Drying food is a simple, low-cost way to keep

CCTV9英语新闻12月：嫦娥3移动到接近月球轨道

China's lunar probe Chang'e-3 has moved a step closer to the moon. The probe descended from a 100 kilometer-high lunar orbit to an elliptical orbit with its nearest point, just 15 kilometers from the moon's surface. China's lunar probe Chang'e-3 ente

经济学人:中国商业航天 (1)

The first rockets were Chinese. In the 1230s the armies of the Song dynasty, 首批火箭出现在中国。十三世纪三十年代，宋朝军队 who were fighting Mongol invaders, started launching fire arrows propelled by gunpowder some 300 metres

经济学人266:传递热量 良好的传导

1.heat flow 热流，热流动 As soon as I start reiki I usually feel a heat flow from the palm of my hands. 当我开始灵疗的时候，我总能感到一股热量在我的手掌处流动。 Practical application for heat flow measurements in oce

万物简史 第377期:进入对流层(18)

Oceans are the real powerhouse of the planet's surface behavior. 海洋是地球表面活动的真正动力源泉。 Indeed, meteorologists increasingly treat oceans and atmosphere as a single system, which is why we must give them a little of our at

学个词 Learn a Word-VOA英语教学 3215 runoff

今天我们要学的词是runoff. runoff 是指竞选无法分出胜负的情况下进行的决选。 Republican Cindy Hyde-Smith wins the Mississippi Senate runoff vote in an election that critics say was racially charged. 共和党人辛迪海德-史