单词：tenontitis prolifera calcarea
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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
But the throwing arm will be made from a more light-weight wood - Douglas fir. Wayne calculates that a tree trunk of at least 2 feet in diameter is needed to withstand the stresses of hurling 250-poun
中世纪攻城战
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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
1471 、 实践计划 realization 1472 、 对比 contrast 1473 、 对流 convection 1474 、 对接 butt 1475 、 对接合；对接榫 buttjoint 1476 、 对接角榫 buttmitredjoint 1477 、 对接焊
英文名句短语
By Nico Colombant Dakar 04 December 2007 Burkina Faso's cotton production this year has decreased due to inconsistent rains and high oil prices, frustrating executives and farmers in sub-Saharan Africa's leading cotton producer. VOA's Nico Colombant
VOA常速英语2007年（十二月）
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
By Meredith Buel Washington 18 April 2007 A closely divided U.S. Supreme Court has upheld a ban on a controversial abortion procedure. VOA correspondent Meredith Buel has details from Washington. Pro-abortion demonstrators in front of the US Supreme
2007年VOA标准英语（四月）
By Lisa Schlein Geneva 21 June 2006 U.N. Secretary-General Kofi Annan warns that the spread of nuclear weapons threatens to propel the world into a state of crisis. In a speech to the U.N. Conference on Disarmament, the secretary-general mentioned N
2006年VOA标准英语（六月）
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)
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)
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
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
实用英语
今天我们要学的词是pro-life。 Pro-life意思是反对妇女有堕胎的选择权。Pro-life的对立面是 pro-choice，支持妇女的堕胎权。美国总统奥巴马不久前在圣母大学发表毕业演讲。Hundreds of pro-life activis
英语每日一词
今天我们要学的词是pro-life。 Pro-life意思是反对妇女有堕胎的选择权。Pro-life的对立面是 pro-choice，支持妇女的堕胎权。美国总统奥巴马不久前在圣母大学发表毕业演讲。Hundreds of pro-life activis
英语单词荟萃
By Amberin Zaman Istanbul 14 April 2007 Thousands of Turks march towards Ataturk's mausoleum for a wreath laying ceremony in support of secularism after a rally in Ankara, 14 Apr 2007 More than 200,000 Turks protested in Turkey's capital Saturday aga
2007年VOA标准英语（四月）
Mexican President Felipe Calderon has sent a new initiative to his country's Congress that would impose life in prison for those convicted of several categories of kidnapping, including current or former policemen involved in the crime. Mexico has o
VOA标准英语2008年（八月）
Women in China who don't get married after a certain age are often called 'leftover women'. By telling what many of these single women are really thinking, a cosmetics ad has gone viral. Be independent and lead a wonderful life, that's what I want. I
cctv9英语新闻2016年