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(50) / 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(47) / 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(56) / 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(49) / 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(64) / 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(69) / 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(57) / 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(55) / 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(55) / 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(60) / 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(53) / 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(90) / 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(71) / 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(90) / 评论(0) 分类 英语听力文摘 English Digest

The Most Successful Species on Earth 地球上最成功的物种 For many scientists, a species success is measured by sheer numbers. In that case, the most successful species known to man is a type of bacterium known as S-A-R-11, or SAR-11 for short

发表于:2019-02-24 / 阅读(65) / 评论(0) 分类 英语听力文摘 English Digest

Whats That in the Sky? 不明飞行物 In his book Cosmos , the late scientist Carl Sagan talks about the way in which the earth is regularly struck by material from outer space. These collision s with space debris can be minoras in a shooting star o

发表于:2019-02-24 / 阅读(76) / 评论(0) 分类 英语听力文摘 English Digest

Duct Tape and Wart s 管状胶带和疣 Have you ever used duct tape to tape a duct ? Do you even know what a duct is? Maybe not. But you definitely know what duct tape is, and youve probably used it to fix everything from glasses to flashlights. Now

发表于:2019-02-24 / 阅读(87) / 评论(0) 分类 英语听力文摘 English Digest

Making Contact 为什么戴隐形眼镜看东西更清楚? Don:I get contact lenses to replace my glasses and its like Im seeing the world through new eyes. Its miraculous ! Yal: Acutlly, Don, there is nothing miraculous about it. D: Who tell? Y: W

发表于:2019-02-24 / 阅读(100) / 评论(0) 分类 英语听力文摘 English Digest

A Scientist in the Locker Room How do you improve at any sport? You train, train, train. But how you train is just as important as how much. Armed with the science of exercise physiology, todays olympic-class coaches design sophisticated programs for

发表于:2019-02-24 / 阅读(74) / 评论(0) 分类 英语听力文摘 English Digest

Camels 骆驼,被称做为沙漠之舟,它能够忍耐干燥酷热的环境,并且可以在水源极其缺乏的浩瀚沙漠里长途跋涉,是人们沙漠之旅中不可缺少的伙伴.那么,人们是不是真的了解骆驼呢?曾经有两位美国科

发表于:2019-02-24 / 阅读(65) / 评论(0) 分类 英语听力文摘 English Digest