英语听力文摘 English Digest 664 白金为何是白色的

What Makes White Gold White? Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: its white. 图片1 Golden Color Gold is one of the heaviest and softest metals. Pure gold, called 24-carat gold, is so

英语听力文摘 English Digest 666 科学制作出完美松饼

Use Science To Make The Perfect Muffin Blueberry, corn, lemon poppy seed! Muffins come in several scrumptious varieties and are simple to make, but there are pitfalls to avoid. What makes the difference between a lofty, delicate muffin and a flat, ru

英语听力文摘 English Digest 668 为何一些人是双关节？

Why Are Some People Double-Jointed? Can you bend your thumb backwards until it touches your wrist? If you join your hands behind your back, can you lift them over your head without letting go? If you can, you might be what some people call double-joi

英语听力文摘 English Digest 665 粉刺的学问

The Science Of Acne Acne: the scourge of adolescence. Most people endure it at some point, and cant wait to be rid of the combination of whiteheads, blackheads, pimples, and pustules that comprise the skin condition that affects over 80% of teenagers

英语听力文摘 English Digest 662 哭的时候为什么会流鼻涕？

Why Does Crying Make Your Nose Run? 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? Whats the connect

英语听力文摘 English Digest 663 午休的学问

The Science Of The Siesta When you go back to work or class after lunch, why is it so hard to stay awake? 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

英语听力文摘 English Digest 1、国外中医和针灸的规范化

Ontario plans to join British Columbia in regulating traditional Chinese medicine and acupuncture by the end of the year. Ontario Health Minister George Smitherman made the announcement Friday, as a government-appointed panel released its recommendat

英语听力文摘 English Digest 669 高原反应是什么引起的？

What Causes Altitude Sickness? Anyone who has vacationed in the higher elevations of Colorado, such as Vail and Estes Park, will tell you altitude sickness can be a real problem. Loss of appetite, nausea, vomiting, weakness, dizziness, and difficulty

英语听力文摘 English Digest 671 玫瑰不叫玫瑰

A Rose By Any Other Name Just saying the word rose conjures up images of romance, secret admirers, Valentines gifts, and bridal bouquets. Romantics imagine soft, red petals and long, graceful stems, but practical gardeners know all about painful, poi

英语听力文摘 English Digest 673 为什么要成为一个运动迷

Why Be A Sports Fan? Ever notice how sports fans insist on talking as if theyre one of the players when all you do is watch the games on TV? It could be that cheering a particular team gives them an identity and sense of belonging. They are defining

英语听力文摘 English Digest 674 停止吸烟会导致体重增加

Stopping Smoking Can Lead To Weight Gain One of the really interesting things about the nicotine in cigarettes is that it works in two ways. All About Nicotine When you take a long drag, it acts as a tranquilizer, but when you inhale in short puffs,

英语听力文摘 English Digest 675 雄性的未来

The Future Of Males Have you ever heard predictions that one day women will be able to have babies without men? It turns out that some species of the Whiptail lizard have figured out how to do this and completely eliminated the male sex. Females Clon

英语听力文摘 English Digest 676 老式冰淇淋机

Old Fashioned Ice Cream Makers Have you ever seen an old-fashioned ice cream maker? Nestled inside the wooden bucket, theres a metal canister with a hand crank on top. Cranking the handle scrapes the sweet, creamy mixture from the sides of the metal