新东方优美背诵短文50篇 Unit48:Bacteria

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacteria are u

新东方背诵文选 L48 Bacteria

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is abo

创新英语-Shopping Carts Covered in Bacteria

A new study into the hygiene of supermarkets has found that shopping carts are dirtier than the stores bathrooms. Microbiologist Dr Charles Gerba of the University of Arizona conducted research on the handles of 85 carts in four American states. He r

SSS 2008-09-23

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Sometimes a bit of bacteria can be just what the doctor ordered. If you prize yogurt for its active cultures, you know what Im talking about. Now a new s

SSS 2010-03-16

They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists at the University of Colorado in Boulder have been able to identify individuals ba

Agroecology, Part 2

By Mario Ritter Broadcast: October 7, 2003 This is Doug Johnson with the VOA Special English Agriculture Report. Today we finish a two-part series. A listener in Brazil asked about 1)agroecology. This

Agroecology, Part 1

By Mario Ritter Broadcast: September 30, 2003 This is Steve Ember with the VOA Special English Agriculture Report. This week, we take a suggestion from a listener in Brazil. Agricultural specialist Lu

VOA常速英语2008年-Antibiotic-Resistant Bacteria Poses Threat to P

By Ruth Reader Washington, DC 13 February 2008 There is growing concern around the world over illnesses caused by new antibiotic-resistant bacteria, or so-called superbugs, and the decreasing effectiveness of antibiotics to treat infections. Earlier

VOA标准英语2011--Automakers Turn Agro-Waste into Car Part

Scientists in Brazil are turning fruit fibers into car parts. At a recent meeting of the American Chemical Society, the researchers described their work in making the next generation of automotive parts made from natural fibers from bananas, pineappl

VOA慢速英语2011--Gut Bacteria: We Are What We Eat

HealthReport-GutBacteria:WeAreWhatWeEat This is the VOA Special English Health Report. The human digestive system is full of bacteria -- mostly good bacteria. These organisms help break down food so the body can use the nutrients. Scientists are expl

Experts: Let Produce Dry Out to Avoid Bacteria

Experts: Let Produce Dry Out to Avoid Bacteria American researchers say farmers should wait one day after a rain storm or watering their fields to harvest fresh fruits and vegetables. They say gathering the crops at least 24 hours after rainfall incr

2007年VOA标准英语-India, US Making Last-Ditch Bid on Nuclear Agre

By Steve Herman New Delhi 19 July 2007 High-level talks between India and the United States are going into an unscheduled third day in Washington in the hopes of overcoming obstacles to a controversial nuclear cooperation agreement. VOA's Steve Herma

VOA标准英语2012--Attack on Pro-Gbagbo Protestors Draws Criticism from Ivorian Rights Group

Attack on Pro-Gbagbo Protestors Draws Criticism from Ivorian Rights Group Dozens of supporters of former Ivory Coast President Laurent Gbagbo were attacked and injured during a rally Sunday in Abidjan, after opponents began throwing stones. Eric-Aim

VOA标准英语2010年-Foreign Agro Firms Scoop Up Ethiopian

Peter Heinlein | Addis Ababa 22 February 2010 The Green Revolution that ended food shortages in parts of the world decades ago may be coming to East Africa, bringing the promise of bountiful harvests in a region more often associated with drought and

VOA标准英语2011--Study: Vitamin D is Powerful Weapon Agai

Study: Vitamin D is Powerful Weapon Against TB Vitamin D plays a critical role in fighting infection and now scientists say that it may be a powerful weapon against tuberculosis. In a study reported in the journal Science Translational Medicine, rese

Blag 借用，骗取

William: Hello! Youre listening to Authentic Real English. My names William Kremer and Im joined by Feifei Feng. Feifei: 大家好，我是冯菲菲。欢迎收听《地道英语》，今天我们要学习的这个词是... um William: Is there somet

Death Toll Rises From Deadly European Bacteria

European and World Health Organization scientists say a deadly outbreak of E. coli bacteria that has killed 18 people is a rare and virulent(致命的) strain of the bacteria. The latest victim died Wednesday night in Germany. The United Nations agen

2007年VOA标准英语-Concern Growing in US West Over Agroterrorism

By Jeff Swicord Cheyenne, Wyoming 10 September 2007 Workers at adairy farm There is growing concern that farms and ranches in the western U.S. could become the target of agroterrorism. The devastating outbreaks of foot and mouth disease in Britain a

我国研制的水陆两栖飞机AG600将于上半年首飞

The AG600 amphibious aircraft is expected to take its maiden flight over land in the first half of 2017 and on water in the second half, said its developer, the Aviation Industry Corporation of China (AVIC). 国有飞机制造商中国航空工业集团

Using bacteria to generate energy hopeful

BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Ac