标签：VOA常速英语 相关文章
Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,
英语听力文摘 English Digest
Bees Have Different Jobs According To Their Age Bees take on different jobs in a bee hive according to their age. Many become food scouts when older, but not all scouts are the same. Some search for new flowers, while others fly to and from establish
英语听力文摘 English Digest
How Does Your Body Know Which Way Is Up? Your body uses three senses to keep you balancedto tell you whats up and down. One of the senses is your eyes. They tell you how youre oriented with the world around you. Then theres your body sense. Its the s
英语听力文摘 English Digest
Sex And Violence Did you ever stopped to wonder why sex and violence so often go hand in hand? How come nobody complains about violence and gardening, say, or sex and bowling? There may be a biological basis for this, as we can see when we look at ot
英语听力文摘 English Digest
Hungry Lasagna So you made lasagna last night, and it was delicious. You saved the leftovers by wrapping aluminum foil over the top of the pan, and putting it in the fridge. When you get hungry today, you go to look for that lasagna, but it looks lik
英语听力文摘 English Digest
Whats The Best Way To Help Kids Lose Weight? Youve probably heard that something like a third of all kids in the United States are overweight or obese. And youve probably also heard or read about all sorts of possible solutions: getting rid of sugary
英语听力文摘 English Digest
its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th
英语听力文摘 English Digest
Beware Of Text Neck! Remember when the Blackberry was all the rage, and people worried about straining their thumbs typing on that tiny keyboard? Well, now that the iPhone and other smart phones have taken center stage, theres another malady gaining
英语听力文摘 English Digest
Scientists Use Ancient Shells To Learn About The Past If you were traveling from the United States to Singapore, a guide book could tell you what sort of climate to expect. But if, like paleontologists and geologists, you needed to know what the weat
英语听力文摘 English Digest
Do Violent Video Games Change Our Brains? Video games are a huge industry kids and young adults spend more time playing them than watching movies or TV. And some of the most popular video games are ultra realistic war and fighting games featuring mas
英语听力文摘 English Digest
How Rocks Appear In Your Garden I wonder how many of us went out this past spring to get our gardens ready for planting, smug in the thought that last year we got rid of all the rocks. Theres that nice big mound of them in the corner of the garden wh
英语听力文摘 English Digest
It may sound silly, but its really a good question, because weightlessness does make a visit to the latrine a tricky proposition. Weightlessness poses two main problems in the bathroom. The first is that an astronaut could drift away from the bowl at
英语听力文摘 English Digest
Secrets Of Silk Production Fifteen hundred years ago in China, silk production was a state secret. The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death. Then in 552 AD, two monks s
英语听力文摘 English Digest
Sometime Cavemen From the bestselling novel Clan of the Cave Bear to the 1981 movie Caveman, pop-culture tends to misrepresent prehistoric people as cave dwelling brutes. But even the most speculative recreations of early human society are based on a
英语听力文摘 English Digest
The Rolling Boil That Cools Your Food When you think of something boiling, you probably picture a pot on the stove, but theres another kitchen appliance that brings liquid to a boil, not to heat food, but cool it. It sounds crazy, but household refri
英语听力文摘 English Digest
You Gotta Have Hearts 你必须得有的心脏 When it comes to weird sea-creatures, octopus es are hard to beat. Theres the well-known ink-squirting defense system, the bird-like beak , and the eight tentacle s with their double rows of sucker s . W
英语听力文摘 English Digest
Bombardier Beetle 投弹手甲虫 Male：Is it a beetle or some sort? Female:Right in deed.It's a bombardier beetle .This one is an African species, but it could be found on most other continents too. M: Bombardier ? He releases bomb or some sort? F:
英语听力文摘 English Digest
Aerobic Exercise and Mental Performance Stretching and toning are certainly important, but their benefits are different from that of aerobic exercise. Surprisingly, aerobic exercise isnt just beneficial to your heart, it also sharpens your mind. You
英语听力文摘 English Digest
Drinking and Smoking 烟酒不分家？ Scientists have long been aware of the link between drinking and smoking. In fact, eighty to ninety percent of alcoholic s also smoke, which is about three times the rate in the general population. But a recent
英语听力文摘 English Digest
The Time Before Fire What is fire anyway? Well, fire is rapid oxidization . Its the energy released when oxygen atoms start combining with carbon and hydrogen atoms. Exactly, so without oxygen in the air, nothing burns. You mean there was a time befo
英语听力文摘 English Digest