单词：law of specificity of bacteria
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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
新概念优美背诵短文50篇
Unit 7 Social Issues One Breaking the law. 违法 1 Introduction Most Americans never have any contact with the police except for traffic violations. However，when other Americans break the law, they are supposed to be guaranteed a fair trial. If it i
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EXPLORATIONS - Outlaws and Lawmen of the Wild West, Part 2 By Paul Thompson Broadcast: Wednesday, January 21, 2004 (THEME) VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember with EXPLORAT
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EXPLORATIONS - Outlaws and Lawmen of the Wild West, Part 1 By Paul Thompson Broadcast: Wednesday, January 14, 2004 (THEME) VOICE ONE: This is Faith Lapidus. VOICE TWO: And this is Steve Ember with EXP
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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
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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
创新英语
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
Scientific American(九)月
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
Scientific American(三)月
Hello, and welcome to Legal Lads Quick and Dirty Tips for a More Lawful Life. Im your host, Adam Freedman. But first, your daily dose of legalese: This podcast does not create an attorney-client relationship with any listener. In other words, althoug
法律英语 Legal Lad
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常速英语2008年（二月）
By Steve Mort Hollywood, Florida 20 July 2007 A company in the southern U.S. state of Florida is offering a service to help people write their own laws. For a fee, the Law Store will help members of the public draft legislation and then get it enacte
2007年VOA标准英语（七月）
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
2011年VOA慢速英语(九)月
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
2015年VOA慢速英语(七)月
The European Union has given the West African country of Mauritania a month to restore constitutional order or face unspecified measures. Lisa Bryant has more from Paris where members of the Mauritanian junta met with E.U. officials on Monday. An E.
VOA标准英语2008年（十月）
KELLY MCEVERS, HOST: In New Jersey, lawmakers are considering a bill that would make it a crime to declaw cats. If it passes, New Jersey would be the first state in the country to ban the practice. The bill has sharply divided veterinarians. Critics
2017年NPR美国国家公共电台2月
By Matt Steinglass Hanoi 17 December 2007 A new law has taken effect in Vietnam requiring all motorbike riders to wear helmets. Motorbikes are the most common form of transportation in Vietnam, but drivers long refused to wear helmets, leading to hug
VOA常速英语2007年（十二月）
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
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【昨天回顾】 I share a sentence with you yesterday morning. It is : I thought he loved me , but he blew me off for Babara. 我以为他爱我，可他喜欢的是Babara, 拒绝了我。Blow somebody off在恋爱方面有2个意思，一个是：拒
英语早间课堂
Lesson Two 基础篇之四【情景对话】 Mary: Has Jenny broken up with her boyfriend, Tom? I saw him kissing with another attractive girl , Rose under the tree in the university this afternoon. Jane:Yeah, he did blew Jenny off for Rose living in
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THIS IS AMERICA - US Supreme Court Upholds Healthcare Law, Strikes Down Much of Immigration Law CHRISTOPHER CRUISE: Welcome to THIS IS AMERICA in VOA Special English. Im Christopher Cruise. Today, we will look at the recent United States Supreme Cour
2012年VOA慢速英语(七)月