The Fireproof Balloon 防火气球 Yael, Want to see a trick ? Sure. Here, blow up this balloon. Ok, now what? Now, I light this candle. Now what do you think will happen when you put the flame under the balloon? Itll pop , of course. The flame will

发表于:2019-02-16 / 阅读(75) / 评论(0) 分类 英语听力文摘 English Digest

Sometime Cavemen 偶尔的山顶洞人 From the bestselling novel Clan of the Cave Bear to the 1981 movie Caveman, pop-culture tends to misrepresent prehistoric people as cave dwelling brute s . But even the most speculative recreations of early huma

发表于:2019-02-16 / 阅读(61) / 评论(0) 分类 英语听力文摘 English Digest

Loneliness Is Contagious 寂寞会传染 Some diseases are contagious like colds, flu, and chicken pox . But what about loneliness? Loneliness may not be a disease, at least not in the same way that chicken pox is. But loneliness can be contagious .

发表于:2019-02-16 / 阅读(57) / 评论(0) 分类 英语听力文摘 English Digest

Lithic Principle 岩屑法则 I heard recently that if the laws of nature were changed even a little bit, there would be no people in the universe. Is this true? Well, its certainly true that if the fundamental constants of nature were somehow change

发表于:2019-02-16 / 阅读(72) / 评论(0) 分类 英语听力文摘 English Digest

The Invisible Hand 无形的力量 A: What's going on? B: Check out the setup , Yaoyao. A: A stove, an empty aluminum soda can, kitchen tongs , and a saucepan . Are you experimenting with a new recipe ? B:No, i'm experimenting with air pressure. A:Ho

发表于:2019-02-16 / 阅读(68) / 评论(0) 分类 英语听力文摘 English Digest

The Smell of Dirt A lot of people love that fresh-dirt smell. The surprising thing, though, is that it isnt coming from the dirt itself. Microbiologist s have traced the pleasant odor to an organic chemical called geosmin. No way! But how does geosmi

发表于:2019-02-16 / 阅读(80) / 评论(0) 分类 英语听力文摘 English Digest

UFO Attack 飞碟来袭 June.Nineteen sixty-nine, not one airliner but two, plus the pilot of an Air National Guard fighter plane, report being harass ed by a team of UFOs. One man estimates the glowing ships have come within a few hundred feet. The

发表于:2019-02-16 / 阅读(53) / 评论(0) 分类 英语听力文摘 English Digest

We all know that smoking cigarettes is bad. But what about smoking a pipe or cigars? Since you dont inhale, is it better for your health? Or at least less bad? Good question.So first, its true that cigarettes are in a league of their own when it come

发表于:2019-02-16 / 阅读(48) / 评论(0) 分类 英语听力文摘 English Digest

When traveling by plane what makes our ears pop, and what is it exactly that pops? Most of us are familiar with this phenomenon of travel: it usually happens on takeoffs and landings. Our ears pop because of the change in air pressure as the plane as

发表于:2019-02-16 / 阅读(59) / 评论(0) 分类 英语听力文摘 English Digest

Fans have waited 11 years and put up with three postponements of the concert, but the American singer Whitney Houston finally returned to the UK stage last night. But Whitney's comeback gig on British soil prompted a mixed response from the fans who

发表于:2019-02-16 / 阅读(51) / 评论(0) 分类 英语听力文摘 English Digest

Ant species that burrow have different flood survival strategies. I mean nest design alone can go a long way. Some species make sure to build their nests in sandy or well-drained soil that absorbs moisture and dries quickly. And others build mounds w

发表于:2019-02-16 / 阅读(66) / 评论(0) 分类 英语听力文摘 English Digest

Bobby Brown was very proud of his young son. Once he was talking to a visitor, telling the man how clever his son was. The boy is only two years old, he said, and knows all animals. He's going to be a great naturalist. Here, let me show you. He took

发表于:2019-02-16 / 阅读(71) / 评论(0) 分类 英语听力文摘 English Digest

An apple a day keeps the doctor away. Family doctors are usually called GPs, or general practitioners. My name is Louis Brassy. Im a so-called general practitioner doctor in the centre of London. Im one of two doctors working in our clinic and betwee

发表于:2019-02-16 / 阅读(59) / 评论(0) 分类 英语听力文摘 English Digest

Hi there, I'm Sonali from the BBC World News for Children. Coming up: A train crash in India has killed 65 people. Brazil's footballers are set to play Tanzania and Zimbabwe. And frogs cause traffic chaos in Greece. First - at least 65 people have di

发表于:2019-02-16 / 阅读(57) / 评论(0) 分类 英语听力文摘 English Digest

If you find yourself away from a city, spend an hour looking up on any clear, moonless night. You're bound to see a few brilliant shooting stars. These actually have nothing to do with stars: They're meteors, and if your viewing conditions are good,

发表于:2019-02-16 / 阅读(56) / 评论(0) 分类 英语听力文摘 English Digest

Frost-free Freeze Physics 昇華是指一种物质从固态不经过液态直接转化为气态的过程,是物质在温度和气压低于三相点的时候发生的一种物态变化。与昇華相反的过程称做凝華,指物质从气态直接变

发表于:2019-02-18 / 阅读(61) / 评论(0) 分类 英语听力文摘 English Digest

The Color of Lint 绒线的颜色 You go to the local laundromat to do your wash.In the spinning barrel full of sudsy water you load clothes of all colors: a bright red tee-shirt, blue jeans, a green bandanna. The original mix of clothing is as multi

发表于:2019-02-24 / 阅读(55) / 评论(0) 分类 英语听力文摘 English Digest

Clouds in the Kitchen 厨房飘着的云朵 Fill a kettle with water, then turn on the burner. In a while, your kettle will start belching white billowy stuff into the air. What is this stuff? Steam? Actually, no. Steam is water thats heated to two h

发表于:2019-02-24 / 阅读(94) / 评论(0) 分类 英语听力文摘 English Digest

南极地衣 南极地衣是地球上最古老的植物之一,是一类原始型的低等植物,它能适应南极洲那种沙漠般的干燥和极度寒冷的环境,所以它是分布最广、种类最多的南极土著植物。它主要分布于

发表于:2019-02-24 / 阅读(75) / 评论(0) 分类 英语听力文摘 English Digest

Cant Sleep? Warm Your Hands! 睡不着?暖暖手吧! Ya?l: You okay, Don? Don: Sorry,Ya?l . I've been having trouble sleeping lately. Y: Have you tried thinking warm thoughts about your hands and feet? D: Uh,No. Why would I wanna do that? Y: Beca

发表于:2019-02-24 / 阅读(91) / 评论(0) 分类 英语听力文摘 English Digest