单词：ash fusibility temperature
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How Does Ice Cool Drinks? Heres 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? Heat is a measure of molecular activity: the faster a
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How To Keep Bread From Going Stale Generally speaking, refrigeration helps to keep food fresh. Fruits, vegetables, and dairy products all last longer if kept cool. But dont try to store a loaf of bread in the refrigerator if you want it to stay fresh
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Bug Antifreeze Ever seen a cricket wearing a parka? Probably not, but you might have wondered how insects make it through the winter! After all, theyre cold-blooded, so their body temperature is pretty close to the temperature around them! Why dont b
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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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Cooking Under Pressure When you boil potatoes on the stove top, it can take half an hour to cook them til tender. But, when you boil them in a pressure cooker, instead presto, theyre ready in about five minutes. Whats the difference? What makes press
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Why refrigerators hum? Why refrigerators hum，on toay's moment of science.On the recent program we have discussed how fluorocarboncoolant cools your food by coming to a boil in coils hidden in your fridge. How is this possible? When you boil water o
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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
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Now and forever more We need to be strong A world of peace A world of love We can heal the world And lift it up A world of peace A world of love We can heal the world And lift it up Love will find a way Love will conquer all Love will find a way Love
音乐咖啡厅
Magical time when you are here Buterflies in motion when you appear Sadness disappears I forget everything When you are near Why don't you end this masquerade I love you more than words can say I'm falling Falling again Why don't you end this masquer
音乐咖啡厅
[ti:UNIT 5 Li Ming Goes to Canada Lesson 37] [0:00.707]UNIT 5 [0:02.295]Li Ming Goes to Canada [0:04.909]Lesson 37 [0:07.118]Mr. Wood's Lesson [0:09.734]THINK ABOUT IT! [0:11.283]What is the weather like in your city today? [0:15.000]What is the temp
河北教育初中英语（初中起点）七年级下册
Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of
英语杂谈
By Catherine Drew London 22 January 2008 This weekend saw millions of Muslims mark the day of Ashura around the world. In central London, about 3,000 Shi'a Muslimsgathered to commemorate the martyrdom of Hussain Ibn Ali, thegrandson of the Islamic pr
VOA标准英语2008年（一月）
Thermometers just tell you the temperature. Thermostats need to do more than that. In addition to reading the air temperature, thermostats also turn your furnace on if the air gets too cool, and turn it off again when the air heats up. How do they do
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Key Sentences(重点句子) 860．I wonder whether you are getting bored dealing with such petty cash transaction. 我想你对处理这样的零用现金交易不烦吗？ 861．As a secretary, he or she is expected to keep the office cash transacti
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Ocean Heat 海洋热量 Ya?l: I hear a lot about global warming, but how do scientists take the Earths temperature? Don: Great question. Most of the excess heat trapped by greenhouse gasses like carbon dioxide ends up in the oceans.Thats because the
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Dehydration 脱水 If I were to stop drinking water right now, how long could I live? There are different factors involve d here. A human being isnt an automobile which needs a certain amount of gas. There are conditions under which a person could di
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Early-morning Shivers 清晨为何冷得发抖？ 自然界、生物界都有它本身的特有的严谨的节律。人体的生物节律与自然节律相适应，人类才得以生存下来。地球上亿万年的昼来夜往，永不停息。人体的
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Contrary to popular belief, alcohol does not make you warmer. It may give you the feeling that youre getting warmer, but thats just an illusion: really, alcohol makes you more susceptible to the cold. In cold weather, the body reacts by routing blood
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What I Learned From Living Two Months Without Cash Does Using Cash Lead You To Spend More or Less? It all ended a few days ago, when I withdrew $120 from an ATM in the bodega on my corner. Two months of living cashlessly came to a close with that sim
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Cold Feet and Hot Wings 鸟通常只在休息或睡觉的时候才单脚站立。鸟类学家认为，他们这么做是为了减少能量的消耗，并把一只脚收到翅膀之下休息，通常他们会交替使用两只脚独立。披着一身羽
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