标签：English Digest 相关文章
Sleeping With One Eye Open Theres an old saying that if you think youre in danger, you might ought to sleep with one eye open. Well it turns out that many kinds of birds do just that. A group of scientists at Indiana State University studied mallard
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Out for the Count 失去知觉之后 If youve ever had major surgery, you probably remember lying down and waking upbut nothing in between. Thanks to the anesthesiologist, during the actual surgery you were out of it: immobilized and insensitive to p
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Volcanos and Water Firefighters use water to battle a towering inferno.You might wonder if water could also stifle an erupting volcano. Actually, this experiment happens every time a volcano erupts at the bottom of the ocean. What happens when a volc
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Why Are Nights More Calm Compared To The Day? More often than not, the wind dies down at night after a blustery day. Where does the wind go? Why are nights generally more calm than days? The difference between calm nights and windy days is the sun. D
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What Are Solar Tornadoes? Large, Earth bound tornadoes are pretty impressive weather events. Those dark, giant funnel clouds inspire much awe and fear. But theyre nothing compared to so called solar tornadoes solar gases swirling in monstrous formati
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Greek Island Shows Signs Of Volcanic Unrest Fira is a typical Greek city overlooking the Aegean Sea. Sitting atop a twelve hundred foot cliff on Santorini Island, its an ideal vacation spot. But this island wasnt always a paradise. Thirty five hundre
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The ozone layer is thinner than it used to be. This fact has motivated humans to keep themselves protected from the suns ultraviolet, or UV, rays. But just because we can protect ourselves from these rays doesnt mean that they dont still existthey ex
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Even as adults we still enjoy blowing bubbles, dont we? If youve ever wondered why blowing on a thin film of soapy water creates bubbles, this is your lucky day. All liquids have a property called surface tension. Take water, for example. Water molec
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Is There A Connection Between The Brain And The Gut? Most people realize there is a brain gut connection. Nervous tension can aggravate irritable bowel syndrome and common dyspepsia, or stomach upset. If the brain can upset the gut, can the gut upset
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What Is Whipped Cream? It adorns ice cream sundaes, pumpkin pie, gingerbread, and hot chocolate. Its sweet creaminess tantalizes taste buds and sends dieters running from the scale. Did you ever wonder why heavy cream whips into soft, light peaks? Yo
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Why Does Altitude Cause Headache? Mountain climbers face many dangers as they brave the cold winds and icy slopes and jagged cliffs of the peaks they climb. But one of the most serious dangers they face is all in their headsliterally. Why does altitu
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The Supermarket Numbers Game Have you ever gone to the store just for milk, but walked out with eight sale-priced cans of something youd never tasted and eight candy bars? How does that happen? Brian Wansink and colleagues have studied how people mak
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The Bare Necessities Of Bears In the movie The Jungle Book, Balloo the bear spends his days singing and dancing and munching paw-paws. Actually, this is a pretty accurate picture of real bears, except for the singing and dancing. North American bears
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When Continents Collide: The History Of Our Planet It was one of the Earths momentous times. Continents collided. Volcanoes erupted. Ocean currents shifted. Species ran amok. Twenty million years ago, North and South America were arranged in nearly t
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Night Vision And Humans: Why Cant We See Color? When we are in a fairly dark room, or outside at night away from lights, we can still see, but we cant see the colors of things very well. Why is that? There are two kinds of light-sensitive organs loca
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The title track of Black Rose's newest CD, is called Sky Stamp. It opens with a traditional Mongolian long-song: This is the music of vast open spaces and big blue skies. It is the music of Mongolian nomads, calling out across the grasslands, soothin
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Long Live Us About a century ago, the average life-span for Americans was about 50 years. Today, the typical American lives for around seventy-eight years. According to a German aging study, the maximum life span in industrialized countries has incre
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Winter Wheat According to the famous song, America is beautiful for its spacious skies, purple mountains, and amber waves of grain. If you were to make a music video based on these lyrics youd probably want mid to late summer images of fruit-laden tr
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Good News: Hot Chocolate Is Good for Your Heart! 巧克力热饮有益心脏 Drinking green tea all the time may get a little boring,but it's helping me stay healthy. Antioxidant s fight cancer and heart disease. I heard that fruit juices like cranbe
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尼古丁贴片（Nicotine patch ）是一种香烟替代品。 尼古丁贴片主要有三种剂量，分别含有7、14、21毫克的尼古丁，使用者可根据吸烟量选择不同剂量的贴片。使用时将贴片贴在皮肤上即可，每天
英语听力文摘 English Digest