听美文故事记6级单词07-04

4. Why Hearty Women Outlive Men? The age-old riddle of why many women live longer than men has been solved. It's their pumping power, British researchers have found. On average, women live five years longer than men and women over the age of 60 are n

全新版大学英语综合教程第一册 Unit3

Unit 3 Understanding Science Part I Pre-reading Task Listen to the recording two or three times and then think over the following questions: 1. Who is it about? 2. What questions interest him? 3. What

The Ghost In Your Genes - 3 基因外遗传现象

Named after Henry Angelman, the pediatrician who first described Angelman syndrome. He referred to them as happy puppet children because it described, to some extent, the features. They have a rather

三名科学家分享2009年诺贝尔化学奖

The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.

VOA慢速英语2015 能每秒拍摄数十亿张照片的相机_

New Camera Takes Billions of Pictures Every Second 能每秒拍摄数十亿张照片的相机_ Imagine a camera that can take one hundred billion pictures a second -- that is enough to record the fastest movements in the universe. But we do not have

英伦广角 蛇伤咬痕里的DNA有助于鉴定袭击者身份

Snakes still kill tens of thousands of people each year. Giving the antidote quickly can be the difference between life and death. But many bite victims cannot identify the species of their slithering assailants. Which leaves health care workers to m

60秒科学:伏特加的不同口味

I once took part in a vodka tasting contest, in which participants tried to tell an expensive brand from a cheap one. I dont recall the exact outcome, for obvious reasons. But I do know that several people swore they could taste the difference. Well,

VOA慢速英语2018 科学家首次在实验室培育出完全成熟的人类卵子

Scientists Grow First Fully Developed Human Eggs in Laboratory For the first time ever, scientists have succeeded in growing human eggs from the earliest stages to full maturity in a laboratory. 科学家们有史以来首次在实验室将人类卵子

专业术语—口腔生理学术语T1(英文详解)

Template - an outline form which can be used to make many identical copies without being used itself. Metal templates can be used placed over a piece of clothing material, which is then cut according

VOA慢速英语2010年-Health Report - Scientists Take Step i

This is the VOA Special English Health Report. Evidence is increasing that common influenza viruses are becoming resistant to the main drug used to treat them. The drug is oseltamivir, also known as Tamiflu. The most common seasonal flu virus found i

VOA标准英语2011--Automakers Turn Agro-Waste into Car Part

Scientists in Brazil are turning fruit fibers into car parts. At a recent meeting of the American Chemical Society, the researchers described their work in making the next generation of automotive parts made from natural fibers from bananas, pineappl

VOA标准英语2010年-Researchers Seek Genetic Clues to Dead

An international team of researchers looking for the cause of severe bacterial epidemics has deciphered the genome of group A streptococcus, a normally harmless sore throat pathogen that occasionally turns deadly. Experts say the breakthrough could s

VOA标准英语2010年-US: Antibiotic Use in Livestock Harms

Animals in many large livestock-raising operations around the world get a small but steady dose of certain antibiotics in their feed. U.S. health officials say there is unequivocal evidence of a link between overuse of antibiotics in healthy livestoc

VOA标准英语2010年-NASA Searches for Water on Moon

Last October, a NASA rocket, traveling at a speed of 9,000 kilometers per hour, smashed into a dark crater on the moon's south pole. Upon impact, the Centaur rocket kicked up a cloud of debris and elements from the moon's surface, creating a so-calle

VOA标准英语2010年-Chemists Take First Steps in Making Ca

The drug Taxol is a powerful weapon in the fight against cancer, but it's very expensive and complicated to manufacture. Now, scientists at Tufts University and the Massachusetts Institute of Technology (MIT) say they've taken the first steps to make

美国国家公共电台 NPR A Microbe Hunter Plies Her Trade In Space

RACHEL MARTIN, HOST: A few years ago, an airplane touched down on a grass runway in the Democratic Republic of Congo, and out stepped microbiologist Kate Rubins. KATE RUBINS: If you put your finger on a map in the middle of Africa, that's about where

60秒科学:Champagne Bubbles Key to Taste

Champagne Bubbles Key to Taste A study in the Proceedings of the National Academy of Sciences finds that champagne's bursting bubbles provide aromatic compounds that add to the taste. Adam Hinterthuer reports Lets raise a toast to champagne. And its

VOA标准英语2010-Songbird Genome Could Reveal Clues to Hum

New map of zebra finch DNA could provide keys to stuttering, autism and Parkinson's disease Vronique LaCapra | St. Louis, Missouri 05 April 2010 Photo: L. Brian Stauffer, University of Illinois News Bureau The zebra finch is the first songbird to hav

诺贝尔医学奖揭晓 挪威夫妻上榜"夫妻档"

The discovery of cells in the brain that act as the body's internal global positioning system, which won three scientists the Nobel Prize for medicine on Monday, opens an intriguing new window onto dementia. Since these spatial cells are among the fi

留美老师带你每日说英文 第906期:大气压力和高度的关系

As altitude increases, atmospheric pressure decreases. This is due to Earth's gravitational pull on the air molecules in the atmosphere. The closer to the Earth's surface the stronger the force exerted on these molecules. 随着高度上升，大气压