文章列表

• 1.【英语时差8,16】微笑有助于健康（下）
• When we laugh, blood vessels relax and become more pliable, making it easier for blood to flow. Plus, laughter is a good stress reliever. Thats import...
• 2.【英语时差8,16】活化能，火，燃烧棒（下）
• Okay, so if the wood is full of carbon and hydrogen, and the air is full of oxygen, why doesnt the kindling burn all by itself? Remember we said that ...
• 3.【英语时差8,16】飞机如何平稳飞行？（上）
• Flying through turbulence in an airplane is usually something of a nuisance; when that fasten-your-seatbelts sign comes on, you know youre in for a bu...
• 4.【英语时差8,16】蓝细菌：未来的燃料（下）
• Scientists are tackling that dilemma Some are developing strains that produce cellulose and sugars, and could produce the same amount of energy as cor...
• 5.【英语时差8,16】飞机为什么会颠簸？
• Airplane bumps are caused by regions of air moving at different speedsfor example, a layer of fast-moving windy air rubbing against a layer of relativ...
• 6.【英语时差8,16】蓝细菌：未来的燃料（上）
• When most people fill their gas tanks, they think of fossil fuels and pumping oil from the ground. But many scientists around the country think bacter...
• 7.【英语时差8,16】美味巧克力的是如何形成的？
• A chocolate bars flavor depends largely on the crystalline structure of the chocolates chemicals.Research, sponsored by chocolate bar companies of cou...
• 8.【英语时差8,16】人类最亲密的朋友——狗
• Ya?l: I was walking my cocker spaniel this morning, and we ran into two other dogs---a great dane almost as tall as I am, and a tiny Chihuahua! I can'...
• 9.【英语时差8,16】传声筒
• If you want to call to a friend half a block down a crowded street, you might cup your hands around your mouth to better aim your voice. If you're fee...
• 10.【英语时差8,16】语言捷径
• A study at the University of Arizona looked at the speech of several undergraduates talking on the phone, reading a story, and reading word lists. The...