2007年NPR美国国家公共电台一月-From One Question, Two Families Spring

Time now for StoryCorps . Many of the stories in this traveling oral history project have been about relationships. Today, two friends, Cathy Resmer and Jules Fishelman, talk about how their relationship was transformed at a potluck dinner. You are f

60秒科学:爱德华兹获诺贝尔医学或生理学奖

10月4日，在瑞典首都斯德哥尔摩的卡罗林斯卡医学院，诺贝尔奖评审委员会宣布，英国生理学家罗伯特爱德华兹获得2010年诺贝尔生理学或医学奖。 85-year-old Englishman Robert Edwards wins the Nobel Pri

VOA常速英语2015--科学家们尝试不同的方式拯救犀牛

Scientists Test Different Ways for Saving Rhinos 科学家们尝试不同的方式拯救犀牛 The African rhino is a seriously endangered species and one subspecies, the northern white rhinoceros, is on the brink of extinction. After the recent deat

纯正地道美语(外教讲解)246：生命的奇迹

A: Continuing with our class, today we are going to study briefly the miracle of life. Many of you may think you already know how babies come to be, but I am sure that some of the things that we will be talking about today may surprise you. Billy ，

《英语流行话题阅读:语境识词3500》Unit71:寻找代孕母亲

《英语流行话题阅读:语境识词3500》Unit71:寻找代孕母亲

英语听力文摘 English Digest 565、什么是儿童早衰症？

What Is Progeria? Progeria was first described in the nineteenth century. The mysterious disease is often thought of as premature aging. Children with progeria are normal for their first year of life, but then develop medical problems normally seen i

2005年NPR美国国家公共电台九月-Scientists: Male Chromosome Won't Lead to

Scientists at the Whitehead Institute in Cambridge, Massachusetts say it's fortunate for humans that the Y chromosome is not on the verge of extinction. That's because the Y is the chromosome that makes males males. The outlook is less favorable for

美国国家公共电台 NPR Alaska Fishermen Hauling A Bigger Catch With Gear They Get To Use For The First Time

LULU GARCIA-NAVARRO, HOST: Alaska's halibut and black cod fishermen are in a food fight with killer whales. But some fishermen are now using a new piece of gear that prevents the whales from stealing their catch. From member station KBBI in Homer, Al

[科学美国人60秒] SSS 2015-11-13

H. Monkey, from their on south Africa rain forest they produce some of the loudest animal calls in the world. They are about the size of a but they can sound as large as ahas long suspected that the monkeys play a role in attracting mates. the sounds

英语听力文摘 English Digest 455、奇妙的海洋食物链

Overfishing Whales and the Environment 过度捕鲸与环境 Until recently, when scientists studied changes in open-ocean ecosystems, they looked at changes in the bottom of the food chain that gradually make their way to the top, like food shortage

英语听力文摘 English Digest 13、交配8-9个小时的生物

Don: All right, Yael, you're a moth. And mating for you is a big deal because it takes eight or nine hours. So the last thing you want is for some predator to interrupt you and your mate in the act. Yael: I'm guessing that's true not just for moths.

VOA常速英语2007年-Transplant Doctor Argues in Favor of Kidney Sal

By Carol Pearson Washington, D.C. 26 November 2007 Kidney sales are legal in Iran, and they take place in other countries where they are technically against the law. Now, a prominent American surgeon advocates making kidney sales legal in the United

VOA标准英语2009年-Fish Kills Linked to Water Pollutants

By Zulima Palacio Washington 19 October 2009 Scientists dissect fish from a river near Washington, DC Since 2002 thousands of fish in the United States have died and continue to die in many rivers, most in the rivers of the southern east coast. Rese

英语听力文摘 English Digest 366、神奇的“鼻子”

Sperm Sniff Out Their Targets 精子靠嗅觉发现卵子 Scientists who study human sperm have long wondered whether human sperm could somehow sense the presence of an egg . Then, just about a decade ago, it was discovered that sperm have protein s