2007年VOA标准英语-Iraqi Hospital Struggles to Maintain US-Funded

By Barry Newhouse Irbil, Iraq 30 April 2007 American inspectors who review reconstruction projects in Iraq say some rebuilt facilities are falling into disrepair because they are not being properly maintained. A report by the Special Inspector Genera

外研社新标准小学英语(一起2012版)一年级上册 Review Module

【标题】Review Module 复习模块 【标题】Activity 1 Listen and point. Then practise. 活动1 听录音并指出，然后练习。（听力练习）

VOA常速英语2014--Hospital Machinist Aids Medical Research 医院机械师艾滋病医学研究

Hospital Machinist Aids Medical Research医院机械师艾滋病医学研究 HOUSTON Many people who would have died from common ailments a few decades back are alive today thanks to advances in medical technology, including devices created by resear

美国国家公共电台 NPR 50 Years Later, NASA Creates Tribute To 3 Astronauts Who Died In Space Race

ARI SHAPIRO, HOST: Tomorrow marks the 50th anniversary of a tragic moment for America's space program - the Apollo 1 fire that killed three astronauts. The fire erupted on the launch pad during a routine test. The accident shocked NASA just as the ag

英语听力文摘 English Digest 617、人体如何造血？

If blood didnt circulate through our bodies, carrying oxygen and nutrients, we wouldnt be able to live. Blood is so important to life that the body constantly makes new blood. To do this, the body must produce the liquid part of blood, called plasma,

英语听力文摘 English Digest 548、远古贝壳知晓过去？

Scientists Use Ancient Shells To Learn About The Past If you were traveling from the United States to Singapore, a guide book could tell you what sort of climate to expect. But if, like paleontologists and geologists, you needed to know what the weat

英语听力文摘 English Digest 596、以前的昆虫是很庞大的！

In The Past, Insects Were Huge! Once upon a time, hundreds of millions of years ago, many insects were much larger than they are today. Scientists have found fossilized remains of dragonflies with wingspans several feet in diameter. Other insects wer

VOA标准英语2011--Experts Recommend Screening Newborns for

Experts Recommend Screening Newborns for Heart Defects One of the scariest things a new parent can hear is, your baby has a birth defect. But some of the most dangerous birth defects are are invisible ones, such as deformities in the baby's tiny hear

2006年VOA标准英语-Study Finds Airline Cabin Pressure Does No

By David McAlary Washington 16 May 2006 Long distance air travel can increase the risk of blood clots in the legs, a potentially fatal condition that has been known for more than half a century. Now B

英语听力：自然百科 已知的宇宙：外星生命 Alien_Contact-3

Those planets are all going to be so hot, and you cant develop something as complex as life. Scientists have gone back to the drawing board, looking to find worlds capable of supporting life, small rocky planets like earth. We dont know that life has

英语听力文摘 English Digest 446、有三个心脏的家伙！

You Gotta Have Hearts 你必须得有的心脏 When it comes to weird sea-creatures, octopus es are hard to beat. Theres the well-known ink-squirting defense system, the bird-like beak , and the eight tentacle s with their double rows of sucker s . W

英语听力文摘 English Digest 496、燃烧仅在地球可行

The Time Before Fire What is fire anyway? Well, fire is rapid oxidization . Its the energy released when oxygen atoms start combining with carbon and hydrogen atoms. Exactly, so without oxygen in the air, nothing burns. You mean there was a time befo

科学美国人60秒 SSS Gulf Dead Zone Makes for Shrimpier Shrimp

Every spring, the Mississippi River dumps tens of thousands of tons of nutrient runoff into the Gulf of Mexico. Add temperature, current and wind to that pollution, and you have the Western Hemisphere's largest stretch of oxygen-poor watersa so-calle

英语听力文摘 English Digest 369、“勒不死”的苍蝇

Can You Choke a Fly? 你绝对勒不死苍蝇 Don:These dark flies are driving me badly! I wish I could strangle each of every one of them! Yal:Im sorry to say, but thats impossible. D: I realize that. I dont mean that I have to strangle all of them.

英语听力文摘 English Digest 247、呼吸甲烷

A Fresh Breath of Methane 很早很早以前地球有很微量的氧气，而且地表状况十分恶劣。大气主要是N2和Co2，后来通过复杂的变化，地球开始出现了厌氧型生物。在生命的作用下，地球的氧气开始不断