单词：prevacids
(prevacid 的复数)
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January
Scientific American(一)月
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation
Scientific American(四)月
266. Brown's Invasion of Canada, 1814. 266．布朗攻入加拿大（1814年） In the first two years of the war the American armies in New York had done nothing. 战争开始前两年，在纽约的美国军队没有什么举动， But abler men we
美国学生历史
From VOA Learning English, this is the Health Lifestyle report. Nearly 790 million people around the world do not get enough to eat. Most of them live in developing countries. Many parts of the developing world do not have transportation systems in p
2017年VOA慢速英语(六)月
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1953 a student named Stanley Miller did an experiment showing that the simple chemicals present on the early Earth could give rise to the basic buildi
Scientific American(十)月
The early Earths oceans were home to a lot of interesting chemistry. Now scientists have found that amino acids thought to be present way back when could have been cooked into other compounds vital for lifean idea you should take with a grain of salt
Scientific American(九)月
By Amelia Shaw Port-au-Prince 18 February 2006 After days of turmoil and protests, the interim government of Haiti declared Rene Preval president on Thursday. Preval receives 51 percent of the votes,t
2006年VOA标准英语（二月）
As the HIV/AIDS epidemic continues to spread, new research shows its taking an increasing toll on men-having-sex-with men or MSM. The issue was addressed at the 18th International AIDS conference in Vienna, with calls for greater funding and human ri
VOA标准英语2010年(七)月
New Drugs Promise Higher Cure Rates for Hepatitis C The U.S. Food and Drug Administration has approved two new drugs - boceprevir and telaprevir - to treat hepatitis C, a virus that can cause liver damage and cancer. The new drugs are expected to imp
VOA标准英语2011年(六月)
Researchers are in the final steps of evaluating two new drugs to add to the existing treatment for hepatitis C. An estimated 170 million people worldwide have the liver infection known as hepatitis C. The standard, two-drug treatment is not effectiv
VOA标准英语2011年(四月)
ARI SHAPIRO, HOST: The state of Florida has some of the nation's toughest building codes - at least most of the state. The rules are less stringent in the panhandle. That's where Mexico Beach is, and that's where Hurricane Michael made landfall with
2018年NPR美国国家公共电台10月
Olive oil is 100% fat; there's nothing else in it. 橄榄油含有100%的脂肪，除此之外没有别的。 Pancake mix, on the other hand, is only about 11% fat. 相反，煎饼只有约11%的脂肪。 And, yet, olive oil is good for you, and panc
TED演讲教育篇
By Amelia Shaw Port-au-Prince 15 May 2006 On Sunday, Haiti swore in Rene Preval as its first democratically elected president since former president Jean Bertrand Aristide was forced into exile two ye
2006年VOA标准英语（五月）
AGRICULTURE REPORT - Scientists Clone Pigs to Make Omega-3 Fatty AcidsBy Mario Ritter Broadcast: Tuesday, April 04, 2006 I'm Faith Lapidus with the VOA Special English Agriculture Report. Scientists s
2006年慢速英语（四）月
This is the VOA Special English Development Report. A researcher says three hundred forty-three thousand AIDS deaths in South Africa in the last ten years could have been prevented. Nicoli Nattrass blames the former government of Thabo Mbeki for dela
2010年慢速英语(三)月
By Bill Rodgers Washington, D.C. 08 February 2006 watch Avid report Throngs of voters turned out for elections in Haiti, exactly two decades after the downfall of the Duvalier dictatorship and almost
2006年VOA标准英语（二月）
Haiti's President Rene Preval has discussed his country's earthquake recovery and economic needs with President Barack Obama in a meeting at the White House. It was President Obama's first meeting with the Haitian leader. Nearly two months after a ma
VOA标准英语2010年(三月)
You need to take proper care of your eyes to maintain good eyesight. There are few fundamental rules that have to be done for good eye care. As you know very well that exposure to sun is very bad for the eyes. Similarly, if you use computer for long
英语小短文
Proteins are what you get when you string amino acids together, and we need a lot of them. 你把氨基酸串在一起，就得到了蛋白质。我们需要大量的蛋白质。 No one really knows, but there may be as many as a million types of pro
万物简史
Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说，每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu
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