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

英语听力文摘 English Digest 608、大自然中的DNA交易

Wouldnt it be great if we could trade genes with other species? For example, suppose you could trade the family cat your genes for intelligence for its genes for physical coordination! Well, okay, thats not likely to happen anytime soon. But DNA trad

英语听力文摘 English Digest 542、糜鹿也有关节炎？！

Did You Know That Moose Can Have Arthritis? Its easy to tell, even at a glance, that people and moose are pretty different. Moose, at least males, have big, wing shaped antlers. People have no antlers. Moose are herbivores, eating only plants. We eat

2006年VOA标准英语-Limited Progress Made Against Major Diseas

By Paul Sisco Washington, DC 26 January 2006 watch Health report Promising new developments -- and disappointments -- in the battle against some of the major diseases plaguing the planet: Smallpox - w

VOA标准英语2012--Stem Cell Therapy Effective Against HIV Virus in Mice

Stem Cell Therapy Effective Against HIV Virus in Mice The actual stem cells were injected in my arm, said Diana Souza. Diana Souza says stem cell therapy helped restore full use of her severely fractured arm. It is a miracle. It does work. And I have

【英文短篇小说】Confido

Kurt Vonnegut The Summer had died peacefully in its sleep, and Autumn, as soft-spoken executrix, was locking life up safely until Spring came to claim it. At one with this sad, sweet allegory outside the kitchen window of her small home was Ellen Bow

英语听力文摘 English Digest 469、克隆宠物

Cloning Pets Is animal cloning for real? I want to have my cat cloned. Well, animal cloning technology exists, but pet cloning isnt quite there yet. And it may never be. Why not? I could think lots of people could want to have copies of their pets. T

英语听力文摘 English Digest 472、网络安全与黑客

Cyber -diversity 网络多样性 I'm so tired of hack ers . That's what happens when you have bunch of computers runing the same software. Because they share the same flaw s , if you can hack into one, you can hack into them all. That appens in natur

英语听力文摘 English Digest 478、日光浴床安全吗？

Are Tanning Beds Safe? Millions of people go to tanning salons, some to get a base tan before they go away on a beach vacation. The idea of the base tan is that it will protect you from burning on your sun excursion, so that what you end up with is a

英语听力文摘 English Digest 486、眼睛发光的蝴蝶

a butterfly with glowing eyes Believe it or not, Monteiro and her team insert ed a new gene into the butterflys genetic sequenceone taken from a jellyfish . No, I know you're fooling. Actually I'm not. This gene codes for a green florescent protein t

英语听力文摘 English Digest 32、谁进化得更好

About six or seven million years ago chimpanzees and humans evolved from a common primate ancestor. Chimps went on to become the relatively small-brained, forest dwelling creatures we know and love. Humans went on to evolve large brains, spread throu

Serero wins South Africa's footballer of the year

JOHANNESBURG, May 30 (Xinhua) -- Ajax Cape Town's Thulani Serero won the player of the year award at the South African Premiership awards at Gold Reef City on Sunday. The 21-year-old striker's awards included Footballer of the Year Award, the Premier

英语听力文摘 English Digest 329、地球上最成功的物种

The Most Successful Species on Earth 地球上最成功的物种 For many scientists, a species success is measured by sheer numbers. In that case, the most successful species known to man is a type of bacterium known as S-A-R-11, or SAR-11 for short

英语听力文摘 English Digest 330、近亲禁猎区

Kissing Cousins 近亲之吻 Fans of classic movies will remember the famous dueling banjo s scene in Deliverance, the story of four city friends who take an ill-fated boating trip down a backwoods Georgia river. As the friends set out, one of the fr

英语听力文摘 English Digest 356、基因也疯狂

DNA Wrath of Khan 成吉思汗疯狂的基因 Today, Afghanistan is a war-torn region, battled over by military forces and world-spanning empire s . Eight hundred years ago things were much the same. Only then, there was only one ruler: Genghis Khan.

英语听力文摘 English Digest 187、驯化狐狸

Dmitry Belyaev, Foxes, And Domestication 你与猫或狗玩耍过吗？在远古，狗对我们的祖先来说还是一种比较危险的动物呢。那么，现在为什么它们这么听话？我们的祖先又是如何驯化它们的呢？今天，就

英语听力文摘 English Digest 190、营养基因组学

Nutrigenomics 营养基因组学（nutrigenomics 或nutritional genomics，又叫营养遗传学 nutrigenetics）是研究营养素和植物化学物质对机体基因的转录、翻译表达及代谢机理的科学。 膳食是影响人体健康最重

英语听力文摘 English Digest 223、DNA帮助捕获偷猎者

DNA Helps Catch Poachers 科学家们利用一种革命性的基因技术成功确定了走私犯屠宰大象的非洲地区，这些大象沦为全世界非法象牙贸易的受害者。利用非洲大象的DNA图谱，他们已发现最近缉获的象

英语听力文摘 English Digest 279、米诺鱼的自杀式生存策略

For Minnows, A Suicidal Survival Strategy 北美多种小型鱼类，特别是鲤科(Cyprinidae)鱼类的总称。亦指荫鱼科(Umbridae)和鱂科(Cyprinodontidae)鱼类，minnow一词又泛指许多大型鱼类的幼鱼。北美的鲤科米诺鱼包

英语听力文摘 English Digest 246、蛇的祖先

The Ancestry Of Snakes 古生物学界的一部分学者认为，蛇是由陆地蜥蜴的一个分支进化而来的，在进化的过程中，它们的脚逐渐退化消失了，而身子则变得越来越细长。另一种流行观点则认为蛇的前