单词：temperature-sensistive(ts)mutants
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Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi
新东方背诵文选
by Jason Marshall Lets kick things off with a bit of a strange question: If you were asked to walk up two stairs and then immediately back down three, how would you describe the total number of stairs youd climbed relative to where you began? Do any
数学英语
This Scientific Americans 60-Second Science. I am Karen Hopkin. This will just take a minute. They say that older folks benefit from spending time with young people. And thats not just an excuse to stick grandma at the kids table at Thanksgiving. Now
Scientific American(五)月
She dreams at night. She dreams while she sleeps. She dreams about many things. She dreams about her parents. She dreams about school. She dreams about her friends. She dreams about her dog and cat. She dreams about the future. She dreams about the p
儿童英语小故事
By Ndimyake Mwakalyelye Washington 27 March 2008 When talking about paintings and contemporary art, names such as Pablo Picasso, Georgia O'Keeffe, Vincent Van Gogh and others often come to mind. But, as we are about to show you, there is a whole body
VOA标准英语2008年（三月）
Theres been an unexpected development in our understanding of drug resistance in bacteria. The accepted scenario was a simple case of evolutionary selection. In a bacterial population exposed to a killer drug, a few lucky individuals might have a gen
Scientific American(九)月
By Alan Silverman Hollywood 27 May 2006 One of the most popular film series based on Marvel Comics superheroes becomes a trilogy and raises some interesting real-world issues about diversity and fitting in. ------------------------------------------
2006年VOA标准英语（五月）
Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of
英语杂谈
By Greg Flakus Mexico City 26 July 2006 Corruption has been a problem in Latin America since colonial times. Citizens have been largely tolerant of petty corruption, such as small bribes to bureaucrats and police over minor disputes or offenses, but
2006年VOA标准英语（七月）
By Nico Colombant Abidjan 30 March 2006 The U.N. helicopter sets off from Monrovia airport, Liberia, March 29, 2006, with captured former Liberian President Charles Taylor, en route to Sierra Leone Li
2006年VOA标准英语（三月）
Brief Singular Life Inspires Creative Activists Artist, activist and photojournalist Dan Eldon lived a short, yet full, life expressing himself through photos, drawings and journals. He died almost two decades ago, at age 22, covering a story he beli
VOA标准英语2011年(十二月)
英文歌词： Those were the days of Elaine That was the phrase that she used to describe to her son All the fun she had had Long before he went away Long before days of the dole and the draze and the lull But the call never came To say, oh oh oh Loite
英文摇滚歌曲
By Nico Colombant Abidjan 05 May 2006 Members of Sudan Liberation Army, SLA, walk out of meeting in Abuja, Nigeria, Friday A top civil rights activist for Sudan's Darfur region is dubious about the ne
2006年VOA标准英语（五月）
By Peter Fedynsky Washington, DC 13 April 2006 watch Motivation report Terrorism existed thousands of years before the word entered European languages following the French Revolution in the late 18th
2006年VOA标准英语（四月）
MADRID, Oct. 27 (Xinhua) -- Real Madrid coach Jose Mourinho responded ironically to questions over who will play at left back for his side on their visit to Mallorca on Sunday night. Real Madrid are still without full backs Alvaro Arbeloa, Marcelo an
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音乐咖啡厅:Seal - Les Mots 相关介绍：Seal 全名Seal Henry Samuel，于1963年2月19日出生在英国伦敦，他是一名混血儿，父母分别是自尼日利亚人和巴西人。自上世纪90年代以来，Seal一直都是英国最受欢
音乐咖啡厅
By Lisa Schlein Geneva 09 May 2007 The human rights organization, Amnesty International, has presented an appeal from 147 countries to the United Nations to maintain an independent and effective system of human rights experts. A petition signed by mo
2007年VOA标准英语（五月）
饶舌:Tech N9NE - Check Yo Temperature 相关介绍 ：2008年9月是Tech N9NE事业的一个里程碑，他的双CD专辑《Killer》突破100万张的销售记录。2009年4月7日，Rock The Bells 2009 Festival邀请他来做演出，今年10月的
节奏布鲁斯
法国超女Myriam Abel给Donne你 歌唱选秀节目American Idol在全球持续发烧，在法国也有La Nouvelle Star和Star Academy两个选秀节目相互较劲。Star Academy起步较早，所以有比较多的观众群，每季决选入围者的
流行英文歌曲
SCOTT SIMON, HOST: This just in - research published in a major medical journal concludes that a parachute is no more effective than an empty backpack. But before you leap to any conclusions, hear the whole story from NPR science correspondent Richar
2018年NPR美国国家公共电台12月