【英语语言学习】关于我们的头发

This is SCIENCE IN THE NEWS in VOA Special English. Im Barbara Klein. And Im Steve Ember. Today we talk about hair. We will tell what hair is, how it grows, and some of the main reasons people lose it. Hair has always been an important sign of beauty

侏罗纪搏击俱乐部 第14期:近亲繁殖的副作用

When it comes to attacking an adversary, the sexes were probably different. 在向对手的攻击上两性之间可能不同。 The male refined his hunting skills to capture prey or suitable mate. 雄性通过捕食猎物和追求配偶来完善自己

国家地理:In the Womb: Multiples 孕育日记: 多胞胎

Identicals share one of the closest human relationships biologically. They are likely to grow up looking and sounding extremely similar, yet not a 100% match. A small number of genes in the mother's eggs sit outside the nucleus, known as mitochondria

VOA慢速英语--新发现的骨骼显示古人类的基因组合

Newly Discovered Bones Show Genetic Mix of Ancient Human Relatives Scientists say they have discovered the remains of an ancient female whose mother was a Neanderthal and whose father was Denisovan. Neanderthals and Denisovans are early human species

美语听力 English Café 494

Topics: American Authors-Jack London; Our Gang and The Little Rascals; gruesome versus horrible versus disgusting; son of a gun; to lash out Words: adventure natural selection genes socialism to be disciplined sled series gang short film cast to impr

VOA慢速英语 2007 0327a

This the VOA Special English Agriculture Report. It can be hard to decide which foods to buy in an American grocery store these days. The information on many products makes different claims. These labels suggest that the food is safe, pure or kind t

CNN 2012-04-04

It's Friday. I'm Carl Azuz. This is CNN student news. Earlier this week, we ask you to discuss your memory method. Remember that? Well, today we are going to share some of what you have to say. First up, though, the governor of Colorado has suspended

SSS 2012-06-28

For many people summer equals tomatoes. Thats when folks can get their hands on gorgeous heirloom and traditional varieties, full of tomatoey flavor. Such tomatoes provide a stark contrast to year-round supermarket ones, famous for tasting like, well

SSS 2012-07-20

You might picture Neanderthal cavemen gnaw on bones around campfire. Which wouldnt be inaccurate. But Neanderthal mayhave also dieted on roasted vegetables and known a bit about medicinal plants,too. So says a study in a journal N, the science of nat

美国英语听力80篇3 Lesson54

[00:04.91]54) Anti-sense Technology [00:10.55]Research scientists have reported success in using an experimental method [00:17.97]called anti-sense technology to treat people with cancer. [00:23.41]For years, researchers have tested anti-sense techno

新视野大学英语 读写教程第三册 unit8-a

Unit 8 Section (A) Legal and Moral Implications of Cloning At first it was just plain surprising. Word last week that a scientist named Ian Wilmut had succeededin cloning an adult mammal an achievement long thought impossible caught the imagination o

异类之不一样的成功启示录 第7期:序言(7)

I remember going to Roseto for the first time, and you'd see three-generational family meals, all the bakeries, 我记得第一次来到罗赛托的时候，看到祖孙三代一起用餐, 看到很多面包师； the people walking up and down the s

Using Cats to Explain Cryptocurrency and Blockchain

By now, most people have heard of bitcoin. Bitcoin is a virtual currency that has had a huge rise in value during 2017. Bitcoin however is just one of many cryptocurrencies. A cryptocurrency is a kind of money that does not exist in the form of bills

科学家利用技术改变生物基因

Imagine storing digital information in deoxyribonucleic acid (DNA), the substance that carries genetic information in the cells of living things. What about wearing a device that makes you more intelligent or creating new materials by changing the ge

TED演讲:个体DNA检测的时代来了(6)

A 16-year-old girl, a high school student from New York, Anna-Sophia Boguraev, 一个16岁的女孩，一个来自纽约的高中生，Anna-Sophia Boguraev， wondered whether changes to the DNA of astronauts could be related to this immune suppressi

TED演讲:论生物多样性(3)

We are living on a planet with a lot of activities, with reference to our living environment,done by faith and guess alone. 我们对于这个地球上所发生的许多现象,都只是通过信念或猜测来认知。 Our lives depend upon these cre

SSS 2009-07-03

This is Scientific American's 60-second Science. I'm Christie Nicholson. Got a minute? We might think perfect pitch is an innate talent. Well, a study in the American Journal of Human Genetics is providing some evidence for that. Perfect pitch, aka a

SSS 2010-08-06

One of the concerns about working with genetically modified crops has been that vegetation growing in agricultural fields might escape out into the world. Now, for the first time in the U.S., researchers report a large population of GM crops beyond t

SSS 2010-09-09

This is Scientific American's 60-Second Science. Im Karen Hopkin. This will just take a minute. The first time you visit your boyfriends place, he no doubt tidies up, to give you the illusion that he doesnt live like an animal. Well, animals, too, ca

SSS 2012-05-04

Heres a tale of genes, smells and pigs. Most people have two copies of a gene that enables them to detect a steroidal pheromone called androstenonewhich is found in male mammals, particularly porkers. But most pigs in developed countries have been ch