《英语听力文摘 English Digest》音频打包下载2013-12-07
《英语听力文摘 English Digest》听力音频打包下载2018-09-08
英语听力文摘 English Digest 628:太空中进餐!2014-08-04
In the 1960s, during the earliest space flights, no one knew exactly how weightlessness would affect eating and drinking.
英语听力文摘 English Digest 627:香菜:爱他还是恨他?2014-08-03
On today’s Moment of Science, we’ll be sniffing our way through a controversial culinary conundrum: the great cilantro debate.
英语听力文摘 English Digest 626:我们只用了大脑的10%吗?2014-08-03
Have you ever heard that we humans use only ten percent of our brains? This oft-quoted myth holds a certain appeal because if it were true, then we could instantly become ten times more intelligent just by firing up that sleepy majority of the brain!
英语听力文摘 English Digest 625:外星球上有生命吗?2014-08-01
We’ve all been hearing about ongoing Mars exploration, and how water probably used to be abundant there. And a water spewing volcano was recently discovered on a small moon orbiting Saturn. Water is one sign that life may exist or have existed at some point.
英语听力文摘 English Digest 624:粉刺的学问2014-08-01
Acne: the scourge of adolescence. Most people endure it at some point, and can’t wait to be rid of the combination of whiteheads, blackheads, pimples, and pustules that comprise the skin condition that affects over 80% of teenagers and nearly 20% of adults.
英语听力文摘 English Digest 620:白金为何是白色的?2014-07-31
Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: it’s white.
英语听力文摘 English Digest 622:午休的学问2014-07-31
Although we get energy from food, we also use lots of energy to digest it. Your energy use increases 25-50% as you digest a meal. With all that action going on in the digestive system, the body sends extra blood to the gut to supply oxygen and other necessities.
英语听力文摘 English Digest 621:哭的时候为什么会流鼻涕?2014-07-30
When you burst out crying, you expect the bleary red eyes and the rivers of tears that stream down your cheeks. But on top of all that, your nose starts to run like a faucet. Why does this happen? What’s the connection between crying and a runny nose?
英语听力文摘 English Digest 620:冰块如何使饮品冷却?2014-07-30
Here’s something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work?
英语听力文摘 English Digest 619:人类和猩猩有多相似?2014-07-29
I know that humans and chimps share something like 98 percent of our DNA. But what does this really mean? At least on the surface, humans and chimps seem very different we live in houses, they live in trees. We use complex language, they use hoots and grunts.
英语听力文摘 English Digest 618:美国人的头越来越大了2014-07-29
The story of human evolution goes something like this: Millions of years ago, homo sapiens began to evolve from the prehistoric ancestor we share with our monkey cousins. First, we evolved the ability to walk upright. Then we began fabricating more elaborate tools.
英语听力文摘 English Digest 617:人体如何造血?2014-07-28
To do this, the body must produce the liquid part of blood, called plasma, and the cells that float in it. Plasma is made mostly of water and salts that we absorb through our digestive tracts every day. Its job is to deliver nutrients and water throughout the body.
英语听力文摘 English Digest 616:父母引导健康饮食2014-07-28
It should come as no surprise that the more stressed parents are at work, the greater the burden on their family. It’s also probably not a surprise that this dynamic can negatively affect a family’s nutrition. After all, the more time parents spend working, the less time and energy they have to plan and prepare healthful meals.
英语听力文摘 English Digest 615:制造属于你自己的月球陨石坑2014-07-27
What makes science really fun is when you get to do things yourself, so today we’re going to be making moon craters.
英语听力文摘 English Digest 614:格陵兰岛神奇的计数法2014-07-27
Kids learn to count on their fingers, because they’re so, well, handy! And it makes sense–most number systems originally developed as people counted using their fingers.
英语听力文摘 English Digest 613:酸奶中的神秘液体2014-07-26
When you open a container of yogurt, you’ll often see liquid collected on top. Some people mix it back into the yogurt, and others drain it off. What is it, and where does it come from?
英语听力文摘 English Digest 612:可怕的天花2014-07-26
In Shakespeare’s day, wishing a pox on someone was a terrible curse. Ten percent of the population in 17th century London died gruesomely of smallpox, a virus spread easily by airborne particles or contaminated clothing.
英语听力文摘 English Digest 611:为什么我们想要吃零食?2014-07-25
Sometimes a snack quiets your growling stomach. But sometimes you just feel like munching, even though you’re not really hungry. French researchers recently found that this second type of snack attack is harder on your waistline.
英语听力文摘 English Digest 610:有孩子的夫妻家庭更幸福2014-07-25
I’m a parent of two young kids. It’s challenging, but overall a very rewarding experience. Yet I keep hearing about studies suggesting that parents are less happy than childless couples and single people without children. How sound is this science?
英语听力文摘 English Digest 609:人类语言的起源2014-07-24
Scientists have searched for the origins of human speech in the hoots, grunts, and other vocalizations made by primates. It would seem to make sense, after all, that such sounds may be related to the more varied and articulated sounds we humans make. But there are significant differences.
英语听力文摘 English Digest 608:大自然中的DNA交易2014-07-24
Wouldn’t it be great if we could trade genes with other species? For example, suppose you could trade the family cat your genes for intelligence for its genes for physical coordination! Well, okay, that’s not likely to happen anytime soon. But DNA trading really does happen in nature!
英语听力文摘 English Digest 607:气泡制造2014-07-23
Even as adults we still enjoy blowing bubbles, don’t we? If you’ve ever wondered why blowing on a thin film of soapy water creates bubbles, this is your lucky day.
英语听力文摘 English Digest 606:鲸鱼会被晒伤吗?2014-07-23
The ozone layer is thinner than it used to be. This fact has motivated humans to keep themselves protected from the sun’s ultraviolet, or UV, rays. But just because we can protect ourselves from these rays doesn’t mean that they don’t still exist–they exist, and are targeting the most vulnerable marine mammal, the whale.
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