单词：fermentation titer
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This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. This will just take a minute. Youve probably chased a fly or two around the house this summer. And, chances are, it took a few swings before you brought down the buzzing nuisance.
Scientific American(八)月
This is the VOA Special English Health Report. Every few years, two groups do a study of how many Americans wash their hands after using the toilet. These groups are the American Society for Microbiology and the American Cleaning Institute, formerly
2010年VOA慢速英语(九)月
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北美小学生英语一年级教材（牛津英语教材）
World Hepatitis Day is observed on May the 19th. It aims to increase awareness worldwide of the diseases hepatitis B and hepatitis C. Its hope is to encourage the prevention and diagnosis of these two diseases, and increase the number of people who r
英语课程学习计划和讲义
今天我们要学的词是tit-for-tat. Tit-for-tat意思是针锋相对，以牙还牙。Islamist militants' attacks and tit-for-tat violence between rival ethnic groups have cast doubt on Mali's upcoming elections. 伊斯兰国激进分子的袭击和
英语单词荟萃
AGRICULTURE REPORT - Making Cheese the Traditional Way, Part Two By Mario Ritter Broadcast: Tuesday, October 04, 2005 I'm Jim Tedder with the VOA Special English Agriculture Report. Last week, we hear
农业与发展
Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol
Scientific American(八)月
FAITH LAPIDUS: Im Faith Lapidus. DOUG JOHNSON: And Im Doug Johnson with EXPLORATIONS in VOA Special English. Since ancient times, people have grown grapes to produce wine. Join us as we tell about the history of wine and how it is made. We will also
2010年VOA慢速英语(十)月
The U.S. Special Inspector General for Iraq Reconstruction has criticized the State Department for its management of nearly $3 billion in contracts and grants in Iraq. In two reports, auditors cited weak and ineffective State Department oversight of
VOA标准英语2010年(一月)
The US government is considering, for the first time, the approval of a genetically-modified animal for human consumption. The animal being considered is salmon, but approval could open the door for other animals as well. Those who favor the move say
VOA标准英语2010年(七)月
Stomach cancer is one of the deadliest diseases, and ranks second among cancers worldwide with at least 800,000 deaths yearly. But in the United States, the number of cases has been declining, except for among one group of Americans. Glenda Reimer, h
VOA标准英语2010年(五)月
At Scripps Research Institute in Jupiter, Florida, scientists are working to find clues about how the human brain processes memories. Their laboratory test animal is not a chimp or a dog or a rat animals that we know can remember things it is the com
VOA标准英语2010年(三月)
This is the VOA Special English Development Report. Health experts predict that soon, more people will die from cancer than from AIDS, tuberculosis and malaria combined. They expect that by two thousand ten, cancer will become the world's leading cau
2010年慢速英语(三)月
Glaucoma is the leading cause of irreversible loss of vision worldwide and now doctors believe the devastating disease begins in the brain and not in the eye as has long been thought. Dr. David Calkins, director of research at the Vanderbilt Eye Inst
VOA标准英语2010年(三月)
You start with a liquid containing some kind of sugar, add yeast, and wait. The yeast digests the sugar, giving off alcohol in the process. The sugar in beer comes mostly from a grain called barley. With wine, the sugar usually comes from grapes. Eit
英语时差8，16
Tit for Tat针锋相对An American lady traveling in England some years ago, got into an compartment of a smoking carriage where an Englishman was smoking a pipe. For a short time she sat quietly expecting that the Englishman would stop smoking. But
英语小达人
72 约翰斯·霍普金斯疟疾协会 DATE=7-19-01 TITLE=SCIENCE REPORT - Johns Hopkins Malaria Institute BYLINE=Jill Moss (Start at 01'0
科技之光
今天我们要学的词是multitasking。 Multitasking, 原本是计算机术语，指多重任务同时处理，现在已经被沿用到日常生活中，指同时干很多事情。现在的美国中学生，一边写作业，一边听音乐，还要
英语单词荟萃
Offering Substitute 提供代用品 Specimen Letters1. Offering Rayon in Place of Watered Silk提供人造丝代替水洗丝Dear Sirs,Thank you for your fax of yesterday (April 3) with your order No.456 for 5,000 metres of 100cm wide watered silk. We
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