标签：embryos 相关文章
The preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be foss
新东方背诵文选
Health Report - A Way to Make New Eggs in Women? 健康报道 - 产生新卵子的新途径 This is the VOA Special English Health Report. 这里是美国之音慢速英语健康报道。 New research could raise hope for women who are having trouble
2012年VOA慢速英语(二)月
By Carol Pearson Washington, D.C. 30 March 2006 watch Gender Controversy report This week a doctor in India was sentenced to two years in jail for testing the sex of an unborn child and then agreeing
2006年VOA标准英语（三月）
Don: Time to go again to the A Moment of Science mailbox. A listener writers: Dear Don and Yal, I've had a problem with cavities all my life, so I'm wondering if there are any new dental techniques or discoveries that can help me prevent tooth decay?
英语时差8，16
Why Dont Humans Have Spots Or Stripes? 为什么人类身上没有斑点或条纹？ Have you ever wondered why we humans dont have spots or stripes? Well, maybe you havent, but it is interesting that so many creatures are multicolored but we are not
初学者听力文摘精选
有些以字母O结尾的名词也有两种复数形式，可以加s，也可以加es，例如： mottomottos(mottoes)箴言 manifestomanifestos(manifestoes)宣言 cargocargos(cargoes)货物 buffalobuffalos(buffaloes)水牛 halohalos(haloes)光环 gr
薄冰实用英语语法详解
By Brian Padden Irbil, Iraq 23 August 2006 watch Iraq Christians report The news media often focus on the conflict between Shi'ites and Sunni Muslims in Iraq. But there are other ethnic and religious groups under attack. The small Christian communit
2006年VOA标准英语（八月）
Karin Rodriguez never really worried about her weight until doctors told her it could interfere with the one thing she'd always wanted to become a mother. And you need to lose weight. There is no other option, you know. This is what you have to do to
万花筒2011年
HEALTH REPORT - New Embryonic Stem Cell Lines Developed for Researchers By Paul Thompson Broadcast: Wednesday, August 11, 2004 This is Gwen Outen with the VOA Special English Health Report. Researcher
健康与经济
By Ted Landphair Washington 26 July 2007 For a second time in a year, President Bush has vetoed a bill that would have sanctioned federally funded stem cell research using human embryos. His stance reflects conservatives' view that destroying life to
2007年VOA标准英语（七月）
Stem cells are prised for their ability to give rise to a variety of specialized cell types, including heart, liver, nerve and bone. Unfortunately, it's the stem cells from embryos that have shown the biggest potential, for generating both a range of
Scientific American(六)月
以下段落是摘自新闻里的一些重要信息,并不是一个段落的听写。空内信息可在本新闻中全部找到,大家可以根据这些信息复述新闻。 一、泛听建议： 1、完整听一遍，掌握大意。 2、继续听，特
NPR边听边练
A report to the government suggested that New Zealand could allow parents to choose the sex of their children who are born using IVF (in-vitro fertilisation). This is a process where the egg from the woman is fertilised by sperm from the man outside
新西兰英语
Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o
60秒科学
Labour MPs may not have to vote against their conscience over the governments controversial bill on embryo research, according to the health secretary Alan Johnson. He said he was confident and accommodation could be reached with Catholic MPs. Althou
英伦广角
During the weekend, 2 couples and their families invited the media newspapers, TV and radio to interview them about embryo donation. The first couple had two teenage boys and the second couple had a 3-month old baby girl. Couple 1s 16 year old son wa
新西兰英语
Scientists Pioneer a New Transplant Technique 科学家开辟新的移植技术 Some people are calling it the greatest medical breakthrough so far this century. Surgeons in Spain have successfully carried out the worlds first organ transplant using
英语听力精选进阶版
Cockroach Milk: Yes. You Read That Right SCOTT SIMON, HOST: Is there a time in the future when the voice of a barista might ring out, latte with cockroach milk? Pour a cup of coffee while we tell you about the female Pacific beetle cockroach. She doe
2016年NPR美国国家公共电台8月
本期内容： Precise chemical surgery has been performed on human embryos to remove disease in a world first, Chinese researchers have told the BBC. The team at Sun Yat-sen University used a technique called base editing to correct a single error
夏说英语新闻晨读
Opposition leader will Tony Abbott wil respond to labor's decision to axe the baby bonus in his budget reply speech tonight. Scrapping the five thousand-dollar payment is all part of a raft of savings which the coalition is unlikely to oppose. Mr.Abb
澳洲ABC新闻快递2013年