By Jill Moss Broadcast: November 17, 2003 This is Steve Ember with the VOA Special English Development Report. The drug company Pfizer says it will give enough medicine free of charge to treat about n

发表于:2018-12-01 / 阅读(137) / 评论(0) 分类 VOA2003(下)-发展与科学

This is the VOA Special English Health Report. When parents go to work, their young children often spend the day in child care. That contact with other children can make it easier to get sick. But new research suggests that this might have a protecti

发表于:2018-12-01 / 阅读(109) / 评论(0) 分类 2010年VOA慢速英语(十二)月

\Romaine is another type that's getting attention for the wrong reason. The U.S. Centers for Disease Control is warning that a recent E. coli outbreak is connected to romaine lettuce. 长叶生菜是另一个因错误原因引发关注的例子。美国

发表于:2018-12-02 / 阅读(69) / 评论(0) 分类 CNN美国有线新闻2018年6月

SCIENCE IN THE NEWS - Scientists Search for New Ways to Treat Infection This is SCIENCE IN THE NEWS, in VOA Special English. Im Christopher Cruise. And Im Jim Tedder. Today, we report on the search for new ways to treat infections. We tell how resear

发表于:2018-12-16 / 阅读(226) / 评论(0) 分类 2012年VOA慢速英语(十)月

By Jane M Friedman Washington, DC 11 April 2006 watch DNA Skin Cream report In the United States, where skin cancer is common, a team at the University of Alabama Birmingham is trying out a cream that

发表于:2018-12-16 / 阅读(112) / 评论(0) 分类 2006年VOA标准英语(四月)

This is Scientific American-Sixty Seconds Science. I'm Chris *. Got a minute? I'm guessing you brush twice a day, or aspire to. Our ancestors were a little less diligent. But that's a good thing for scientists, because ancient placode teeth are like

发表于:2018-12-24 / 阅读(59) / 评论(0) 分类 2014年Scientific American(二)月

As a kindergarten teacher might say, sharing is caring. She might not mention that cooperation is also a great way to form a community and thus improve everyone's chances of survival. Humans aren't only ones to apply this strategy. Marine bacteria al

发表于:2018-12-24 / 阅读(53) / 评论(0) 分类 Scientific American(九)月

Baby's Bacteria Related to Birth Method 出生方式决定婴儿携带什么样的细菌 Each of us harbors a unique collection of bacteria, on our outsides and our insides. Now, scientists are finding that the bacteria you get at birth may depend on

发表于:2018-12-28 / 阅读(84) / 评论(0) 分类 初学者听力文摘精选

Back when most folks relied on an icebox to cool food, a block of ice was a precious commodity. If you put hot food in the icebox, the ice might melt. 以前,当大多数人们需要倚赖冰盒来冷却食物的时候,一块冰块就是一件珍贵

发表于:2018-12-28 / 阅读(100) / 评论(0) 分类 初学者听力文摘精选

This is the VOA Special English Agriculture Report. Beans are a popular choice for home gardens. Specialists at the University of Illinois Extension say bush beans need the least work. The plants do not need supports to stand. Green bush beans used t

发表于:2019-01-02 / 阅读(61) / 评论(0) 分类 2010年慢速英语(三)月

pH - a measure of how acid or alkali a solution is. As the pH gets lower, the solution is more acid. At a pH of 7 the solution is neither acid nor alkali. pH is the inverse of the logarithm of the con

发表于:2019-01-03 / 阅读(87) / 评论(0) 分类 医务英语

Planktonic - a form of life style in which an organisms floats freely in a fluid without significant attachment or association with other living forms. Plaque is a film of bacteria in a matrix of sali

发表于:2019-01-03 / 阅读(119) / 评论(0) 分类 医务英语

This is the VOA Special English Health Report. Bad teeth can be painful -- and worse. They can even be deadly. Infections of the gums and teeth can release bacteria into the blood system. Those bacteria can increase the chances of a heart attack or s

发表于:2019-01-07 / 阅读(58) / 评论(0) 分类 2010年慢速英语(三)月

After getting your flu shot, did you know it takes about two weeks to develop an immunity? Its true. You can test your knowledge on more flu facts by taking this quiz. Here it goes. True or false: The flu isnt serious. Thats false. You can have compl

发表于:2019-01-07 / 阅读(56) / 评论(0) 分类 万花筒2011年

AS IT IS 2015-06-05 Anthrax Shipments Incident Continues to Grow 误发活性炭疽菌事件持续增加 The United States military now says it might have sent live anthrax to 52 laboratories in the United States and three other countries. On Wednesd

发表于:2019-01-12 / 阅读(58) / 评论(0) 分类 2015年VOA慢速英语(六)月

Vidushi Sinha | Washington, DC 18 May 2010 The World Health Organization calls antibiotic resistance one of the three greatest threats to human health. Experts fear antibiotic resistance puts humans in danger of becoming nearly defenseless against so

发表于:2019-01-13 / 阅读(111) / 评论(0) 分类 VOA标准英语2010年(五)月

There's a good reason why people should be concerned about having a healthy environment containing lots of animal and plant species. A new study says the loss of biodiversity may make humans more vulnerable to infectious diseases. Biodiversity is one

发表于:2019-01-13 / 阅读(73) / 评论(0) 分类 VOA标准英语2010年(十二)月

ROBERT SIEGEL, HOST: Now some good news, especially for babies around the world. Scientists in the U.S. and India have found an inexpensive treatment for a common infection. It could save hundreds of thousands of newborns each year. The treatment com

发表于:2019-01-16 / 阅读(92) / 评论(0) 分类 2017年NPR美国国家公共电台8月

This Thanksgiving, as you savor your turkey and stuffing, here's something else to give thanks for: the army of microbes that help you digest the feast. Because when you eat, you're feeding them tooand triggering an enormous bloom of gut bacteria. In

发表于:2019-01-20 / 阅读(58) / 评论(0) 分类 2017年Scientific American(三)月

Simon Bolivar, born in 1783 in Caracas, Venezuela, to sixth-generation Spanish Americans. Nicknamed 'The Liberator' , he lead troops to victory in 100 battles. A group of doctors in the United States is questioning how one of South America's most cel

发表于:2019-02-05 / 阅读(65) / 评论(0) 分类 VOA标准英语2010年(六)月