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

VOA慢速英语2010年-Health Report - New Test Could Speed T

This is the VOA Special English Health Report. Tuberculosis killed one million three hundred thousand people around the world in two thousand seven. In addition, almost half a million people who were infected with tuberculosis and with H.I.V. also di

2006年VOA标准英语-Spanish Troops Arrive in Lebanon to Enforce Cea

By Robert Berger Jerusalem 15 September 2006 UNIFIL Spanish soldier holding M60 machine gun stands guard near navy divers as Lebanese boy looks on More international troops are arriving in Lebanon to enforce the one-month-old ceasefire between Israe

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

2006年VOA标准英语-Lebanese Prime Minister Calls for Immediate Cea

By Stephanie Ho Washington 23 July 2006 Lebanese Prime Minister Fouad Siniora says Israeli bombing of Hezbollah targets in Lebanon is forcing his country to its knees. In a television interview, the Lebanese leader said the first crucial step toward

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

VOA标准英语10月-Ethiopian Troops to Relocate Under Somalia Ceasef

Somalia's Ethiopia-backed transitional government has agreed on a date for the withdrawal of Ethiopian troops from two major Somali cities in a new cease-fire deal between the government and an opposition faction. But VOA Correspondent Alisha Ryu in

VOA标准英语2011--E coli: Good Bacteria Gone Bad

E coli: Good Bacteria Gone Bad As a major outbreak of a highly toxic strain of E. coli bacteria continues to sicken residents of Europe, medical experts are racing to find the source. E. coli doesn't usually cause any trouble, says University of Minn

VOA标准英语2011--Libya Conference Opens With Call for Cea

African Union Commission Chairman Jean Ping has opened an international conference on Libya with a call for an immediate end to hostilities and dialogue between the Gadhafi government and rebels. But a hoped-for appearance by a Libyan rebel represent

60秒科学:Cigarettes Are Bacteria Sticks,Too

Cigarettes Are Bacteria Sticks, Too A study in the journal Environmental Health Perspectives finds that cigarettes harbor various species of bacteria, some of which cause disease. Karen Hopkin reports This January, the country Turkey will join a hand

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

VOA标准英语2008年-Georgia-Russia Ceasefire Fragile With Future Un

Russia and Georgia have signed a European-mediated ceasefire agreement, but each side continues to accuse the other of violating the terms. As VOA's Sonja Pace reports from London, efforts now are on diplomacy to end the fighting, but the conflict's

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

VOA标准英语2008年-Iraqi Government, Al-Sadr Movement Agree to Cea

By Suzanne Presto Irbil 10 May 2008 Spokesmen for the Iraqi government and the movement of radical Shi'ite cleric Moqtada al-Sadr say the two sides agreed to a truce Saturday to end weeks of fighting in Baghdad's Sadr City. Hundreds of people have be

双语有声阅读：Bacteria

48 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 bac