英语听力文摘 English Digest 329、地球上最成功的物种

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

英语听力文摘 English Digest 332、不明飞行物

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

英语听力文摘 English Digest 341、胶带能治病？

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

英语听力文摘 English Digest 359、隐形眼镜的秘密

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

英语听力文摘 English Digest 289、提高运动能力

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

英语听力文摘 English Digest 291、骆驼

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

英语听力文摘 English Digest 293、我们见过吗？

Havent We Met 面孔失认症是一种神经心理性疾病，表现为对熟悉面孔的识别能力降低或丧失。一般来讲，面孔失认症病人不能再认出以往熟悉的知名人士及亲朋好友的面孔 。虽然面孔失认症病人

英语听力文摘 English Digest 392、最快的车是什么？

What Makes Hybrid Cars So Efficient ? 最快的车是什么？ Don : Hybrid cars are known as hybrid s because they use an electric motor to augment the performance of a small, efficient gasoline engine. But this isnt the only reason hybrid s are mor

英语听力文摘 English Digest 156、儿童新闻

Hi there, I'm Sonali from the BBC World News for Children Team. It's Friday the 4th of June. Coming up..... McDonald's has pulled Shrek glasses over health fears. There's been a massive fire in Bangladesh. And Stosur reaches the French Open final in

英语听力文摘 English Digest 153、致命的糖

Some methods of preserving food are easy to understand. For example, it's easy to see that freezing your food, or packing it in salt, would make it inhospitable to the microbes which would otherwise cause it to spoil. You might wonder, however, about

英语听力文摘 English Digest 152、下雪打雷？

It's a common enough sound in summer, after the wind finally picks up on a hot and humid afternoon, as the rain starts spattering down in big, fat drops--you're in for a full-blown thunderstorm. It's much less common in winter, even during a snow sto

英语听力文摘 English Digest 163、小松鼠该如何迎战响尾蛇？

Squirrel vs. Snake So lets say youre a common ground squirrel. Just for a moment, pretend youre minding your own business, searching for seeds, doing whatever it is that squirrels like to do. Then, suddenly, out from behind a bush slithers a huge, si

英语听力文摘 English Digest 165、Can Fish Smell?

Y: I noticed that fish have holes that look like nostrils, does that mean they can smell? D: Smell, or olfaction, as scientists call it, is an important sense for many fish. Those little holes that look like nostrils are called nares. Nares dont lead

英语听力文摘 English Digest 173、如鱼得水

D: OK, Yael, you want to build an aquatic robot,and you're trying to figure out the most efficient way to move it through water, what do you do? Y: I am guessing the answer isn't to build a robot using a lot of root-force to move forward? D: Anyone w

英语听力文摘 English Digest 177、保护牙齿

Getting Rid Of Cavities 牙痛是继续忍受还是提前做好防护?爱护牙齿，每天的必修课。 M:Sorry,I'm late.I was brushing my teeth. W:Brushing your teeth?Right before 'A Moment Of Science'? Why? M:I'm trying to get rid of a cavity. W

英语听力文摘 English Digest 179、偶尔的“山顶洞人”

Sometime Cavemen 我们的祖先是否一直生活在一个地方呢？山顶洞人就一直生活在山洞里吗？ From the bestselling novel Clan of the Cave Bear to the 1981 movie Caveman, pop-culture tends to misrepresent prehistoric people as c

英语听力文摘 English Digest 193、怎样哺育孩子

What Time Of Day Is Best To Feed Infants So That They Fall Asleep 把孩子养大可不是一件容易的事。婴儿没有时间观念，他可不管自己的爸爸妈妈累了一天晚上需要休息。更要命的是，孩子似乎觉得晚上的安

英语听力文摘 English Digest 194、limelight的起源

Where Does The Term'Limelight'Originate You're in the limelight now on this moment of science. If someone loves being in the limelight, that means they enjoy being the center of attention. We use the word now to mean social prominence, but have you e

英语听力文摘 English Digest 200、疼痛感受器

Hey! and thenOuch! 伤害性刺激作用于末梢神经引起神经兴奋电活动，沿着脊髓传人神经纤维中的细纤维(A和c纤维)传人脊髓，进而引起痛觉。痛觉是由于痛觉感受器受刺激而诱发的，其他感受器受到

英语听力文摘 English Digest 214、动作与大脑

Word Up, Brain 新发展起来的大脑皮层在调节机能上起着主要作用；而皮层下各级脑部及脊髓虽也有发展，但在机能上已从属于大脑皮层。高等动物一旦失去大脑皮层，就不能维持其正常的生命活