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In the 1960s, during the earliest space flights, no one knew exactly how weightlessness would affect eating and drinking. Would food fly off a plate? Would astronauts have digestive problems, with no gravity to help things along the digestive system?
英语听力文摘 English Digest
Freeze Suppose you are an animal. Well, actually, you are an animal, but suppose youre another kind of animal, maybe something small that might make a tasty snack for a larger predator. Youre walking along one day when you see a big dog. What do you
英语听力文摘 English Digest
The Blurry World Underwater When you open your eyes underwater, things look blurry, but with goggles, everything looks perfectly clear. Why cant we landlubbers focus underwater without goggles? First, we need to explore how our eyes focus when were h
英语听力文摘 English Digest
Why The Sky Is Not Blue Look at various parts of the sky on a clear day and you will see that it is not a uniform blue. Even if the sky is deep blue when you look straight up, near the horizon it is lighter. This is partly due to pollution, but even
英语听力文摘 English Digest
Why Do Golf Balls Have Dimples? Youre out on the golf course one pleasant afternoon. Your ball is set on the tee. You lean over the ball. You grip the club just right. Your arms are straight. Your stance perfect. Whoosh! You swing, and the ball takes
英语听力文摘 English Digest
Carl: Uh! Whats that smell? Jody: Im working on my latest invention. Im turning our old food into an energy source for our car and our house. Carl: Why? There are already lots of types of renewable energy that power cars and homes, and none of them s
地道美语播客
Christine: What is this sticker on your drivers license? Saul: This sticker? It indicates that Ive signed up for the organ donation program. If anything bad happens to me, I want my organs to go to recipients who need them. Christine: You mean you wa
地道美语播客
George: Whoa, what happened? Inga: The lights went out. Did we blow a fuse, or is this a blackout? George: Well, I dont see any lights on in any of the houses down the street. Its pitch black out there. Inga: So its another power outage. Somehow the
地道美语播客
The apartment manager asked all of the tenants to come to a short meeting to learn about fire safety. I didnt want to go, but the manager said that there would be free food, and who am I to turn down free pizza? ... Apartment manager: Thank you all f
地道美语播客
威尼斯举办雷戈塔斯多利卡划船比赛 This is AP News Minute. A final memorial service was held for the late US Senator John McCain at the US Navy Academy in Annapolis on Sunday. On the academy grounds, overlooking the Severn River, McCain
美联社新闻一分钟2018(九)月
Economics Report - A New China-Taiwan Agreement Protects Investors This is the VOA Special English Economics Report. China and Taiwan may disagree on political issues. But on Thursday they reached an agreement to protect investors. The agreement is i
2012年VOA慢速英语(八)月
People in America - John Wesley Powell, 1834-1902: Famous Explorer of the American West SHIRLEY GRIFFITH: I'm Shirley Griffith. RAY FREEMAN: And I'm Ray Freeman with the VOA Special English program People in America. Every week at this time we tell t
2012年VOA慢速英语(三)月
A day after a new Democratic-led U.S. Congress was sworn in, lawmakers are focusing on an ambitious agenda. Senate Democratic leaders Wednesday outlined their priorities, which range from passing an economic stimulus plan to addressing new global th
VOA标准英语2009年(一月)
President-elect Barack Obama's choice to be labor secretary, Congresswoman Hilda Solis says if confirmed she will work to promote fair wages and workplace safety. Her comments came at a Senate confirmation hearing Friday. Labor Secretary-designate,
VOA标准英语2009年(一月)
How Full Is That Glass? 杯有多满？ How does the shape of a glass affect how much you drink? A scientist set out to examine just this, and the results are rather astounding . Whatever the age of the subjects, they consistently poured more juice i
英语听力文摘 English Digest
Can Men Handle Alcohol Better than Women? 男性酒量比女性好吗？ Some men brag that they can handle alcohol better than women. Can there be some truth to that? 引导语：许多男性吹嘘说他们比女性更能掌握酒量。有事实能证
英语听力文摘 English Digest
Why Barn s Are Red Yal: This was a great idea, Don. It's a beautiful day for a drive to the countryside. Don: Yep! Y: Hey, there's a big red barn . An another one, also red. I wonder why so many barn s are painted red. D: I don't have to wonder . I'v
英语听力文摘 English Digest
Salt vs. Ice 食盐大战冰块 Y: Why does salt melt ice? D: It lowers the melting and freezing point of water. Y: Oh,OK.Wait,I don't get it. Doesn't that mean the salt make ice colder? D: Let me explain.Pure water freezes at thirty-two degrees Fahr
英语听力文摘 English Digest
Overfishing Whales and the Environment 过度捕鲸与环境 Until recently, when scientists studied changes in open-ocean ecosystems, they looked at changes in the bottom of the food chain that gradually make their way to the top, like food shortage
英语听力文摘 English Digest
Cyber -diversity 网络多样性 I'm so tired of hack ers . That's what happens when you have bunch of computers runing the same software. Because they share the same flaw s , if you can hack into one, you can hack into them all. That appens in natur
英语听力文摘 English Digest