英语听力文摘 English Digest 615、制造属于你自己的月球陨石坑

Create Your Own Moon Craters! What makes science really fun is when you get to do things yourself, so today were going to be making moon craters. Theyre the roundish blast-marks left on the moons surface by ancient meteorites. The moons surface is co

英语听力文摘 English Digest 620、冰块如何使饮品冷却？

How Does Ice Cool Drinks? 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? Heat is a measure of molecular activity: the faster a

英语听力文摘 English Digest 524、闪电有助于肥沃土壤！

Lightning Helps Fertilize The Soil Our bodies need protein, and proteins contain nitrogen. The air we breathe has plenty of nitrogen to satisfy our needs. Butthat nitrogen is not available to us directly from the air. The only way we can get nitrogen

英语听力文摘 English Digest 572、神奇的发光色彩？

A Magical Glow? Have you ever wondered why fluorescent colors, like you see in highlighters or clothing dyes, for instance,seem so much brighter than other colors? Its because they seem to reflect more light than they receive! It may sound like a mag

英语听力文摘 English Digest 533、为何冰箱会发出声音？

Why refrigerators hum? Why refrigerators hum，on toay's moment of science.On the recent program we have discussed how fluorocarboncoolant cools your food by coming to a boil in coils hidden in your fridge. How is this possible? When you boil water o

2007年VOA标准英语-US House of Representatives Approves Measure St

By Dan Robinson Capitol Hill 25 September 2007 The U.S. House of Representatives has approved legislation to strengthen economic sanctions against Iran over its support for terrorist groups and refusal to halt uranium enrichment. VOA's Dan Robinson

2006年VOA标准英语-Russia Prepares to Host G8 Summit in St. Peters

By Lisa McAdams Moscow 12 July 2006 Eight years after becoming a member of the Group of Eight industrialized nations, Russia is set to host the annual G8 Summit in St. Petersburg - President Vladimir Putin's hometown. It is a significant achievement

英语听力文摘 English Digest 53、2008年科技大预测

What's in store for tech fans in 2008? Plenty. Technology buffs can look forward to products that are better, faster and less expensive than those we rely upon today. The iPhone may have been the biggest tech product rollout of 2007, but that doesn't

Chinese president leaves Seoul for BRICS summit in New Delhi

SEOUL, March 28 (Xinhua) -- Chinese President Hu Jintao left Seoul Wednesday for New Delhi after attending the Seoul Nuclear Security Summit. In New Delhi, Hu will participate in a meeting of Brazil, Russia, India, China and South Africa, or BRICS, s

英语听力文摘 English Digest 362、超市的诡计

Shopping and Hummingbird s 购物和蜂鸟 Yal: Did you know, Don, that your shopping habits maybe similar to a hummingbird s? Don: Are you going to tell me that hummingbird s are also sold on flash colors and miracle diamonds? Y: No. But it turns ou

英语听力文摘 English Digest 364、外星人要吃人？

Why Alien s Wont Eat Us Are alien s going to eat us? Thats more of a science fiction question. But science does have something to say here, and sometimes purely imaginative questions are great tools for helping us think about how the real world works

英语听力文摘 English Digest 365、“不平等”的肌肉

肌肉生而不等 Don:Its not fair! Yal: Whats not fair? D: I was rereading the Constitution of the United States. It says here that All people are created equal.Thats just not true! Y:What do you mean? D: Well, its always being my dream to become t

BRICS nations keen to team up on new energy

SANYA, Hainan, Dec. 4 (Xinhua) -- The five BRICS nations intend to focus and work together on developing alternative energy sources. When Bu Xiaolin, vice governor of China's coal-rich Inner Mongolia autonomous region, spoke over the weekend in front

英闻天下——213 Yingli: China's 1st Company to Join 'Climate Savers'

As a Climate Saver, Yingli has promised an emission reduction target for a fixed period of time. By 2015, at least 4-percent of the electricity the company consumes will come from renewable sources, specifically solar. This target is four times the p

英语听力文摘 English Digest 323、荡秋千的精彩

Swinging Physics: Potential And Kinetic Energy Working Together 动能与势能相互作用 动能是所有能看到的运动的能量，包括物体的，微粒的或质点集的运动等。 势能(Potential energy )是位置的函数，例如把一个

英语听力文摘 English Digest 335、新陈代谢到底是什么？

The Parts of Metabolism 新陈代谢到底是什么？ What is metabolism really? Statements like he can eat a lot because he has a fast metabolism are somewhat misleading. Metabolism isnt about the digestion of food in your stomach; its the name giv

英语听力文摘 English Digest 301、清晨为何冷得发抖？

Early-morning Shivers 清晨为何冷得发抖？ 自然界、生物界都有它本身的特有的严谨的节律。人体的生物节律与自然节律相适应，人类才得以生存下来。地球上亿万年的昼来夜往，永不停息。人体的

英语听力文摘 English Digest 392、最快的车是什么？

What Makes Hybrid Cars So Efficient ? 最快的车是什么？ Don : Hybrid cars are known as hybrid s because they use an electric motor to augment the performance of a small, efficient gasoline engine. But this isnt the only reason hybrid s are mor

英语听力文摘 English Digest 173、如鱼得水

D: OK, Yael, you want to build an aquatic robot,and you're trying to figure out the most efficient way to move it through water, what do you do? Y: I am guessing the answer isn't to build a robot using a lot of root-force to move forward? D: Anyone w

英语听力文摘 English Digest 261、热是一种运动？

The Heat Is On 热传递，是热从温度高的物体传到温度低的物体，或者从物体的高温部分传到低温部分的过程。热传递是自然界普遍存在的一种自然现象。只要物体之间或同一物体的不同部分之间