单词：X chromosome inactivation
单词：X chromosome inactivation 相关文章
托福考试很多同学都发现自己的阅读速度很慢，常常一篇科学文献自己要读整晚读不完。这种情况下做题、做作业更是问题多多。所以问题来了，:我的托福阅读速度为什么很慢? 我在英国上学
新托福写作真题解析
Did you know that the Internet could be a good exercise for the brain? A new study from UCLA finds it when middle age and senior age adults perform Internet searches, it activates many different areas of the brain including those involved with memory
万花筒2008年
Every month new fitness products are hitting the market. The latest craze? Fitness shoes that claim to build muscles. But do they work? Sports medicine expert Doctor Amadeus Mason says probably not. The main thing that makes one shoe better-off is th
万花筒2009年
01. Do you like playing online games? 你喜欢玩网络游戏吗? 02. I prefer to play the counterstrike. 我比较喜欢玩反恐精英。 03. I spend most of my spare time in playing online games. 我的大部分空闲时间都在玩网络游戏。
英语口语最炫潮流
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
医务英语
Its called functional magnetic resonance imaging, or FMRI. And some neuroscientists call it the greatest scientific advance of the last 25 years. Because FMRI lets researchers look at the human brain in action. By measuring blood flow, it produces co
Scientific American(二)月
Scientists at the Whitehead Institute in Cambridge, Massachusetts say it's fortunate for humans that the Y chromosome is not on the verge of extinction. That's because the Y is the chromosome that makes males males. The outlook is less favorable for
2005年NPR美国国家公共电台
This is the VOA Special English Health Report. A miscarriage is the natural loss of a pregnancy before the twentieth week. This happens to as many as twenty percent of known pregnancies. Experts say many pregnancies end before a woman even knows she
2010年VOA慢速英语(八)月
It's believed that our species, Homo sapines, has wandered African lands for at least a quarter of a million years. But maybe this was the place where evolutionary leap took palce. This is what a courteous team of 15 scienists are investigating. And
自然百科2012年
文本： Hathcock: HQ, do you read me? HQ: Loud and clear Sergeant Hathcock,go ahead. Hathcock: We have touchdown,confirm _(1)_. HQ: Roger that. The target zone is located 2 klicks north of your position,a small outpost occupied by the remaining Kes
小龟乐游记英语短文
By Al Pessin Prague 23 October 2007 U.S. Defense Secretary Robert Gates says the United States might be willing to postpone activation of missile-defense sites planned for Poland and the Czech Republic until there is proof Iran has missiles that coul
2007年VOA常速英语（十月）
Daily Life - Mobile Phone Plan (C0106) B: Yeah, Ive just moved here, and Id like to activate my cell phone, and Im not sure if I should go with a prepaid plan, or a monthly rate plan. A: I see. Well, can I have a look at your phone? Unfortunately,thi
纯正地道美语
The difference between these two mistakes may seem unimportant to a lay person, but to a cognitive psychologist it is crucial for understanding how language development occurs.In order for us to construct meaningful language, we must learn how to sup
英语时差8，16
Samsung is warning customers about discussing personal information in front of their smart television set. 三星警告消费者在智能电视前不要交谈个人信息。 The warning applies to TV viewers who control their Samsung Smart TV using i
阅读空间
科技--较量的新时代 Welcome to 'Today' - an hour of world news and analysis -- Today keeps you informed and inspired. I'm Suyi Coming up： China's Ministry of Industry and Information Technology said this week the country will further enhance
The Beijing Hour 新闻纵贯线
But the thinness of the clay layer clearly suggested that in Umbria, if nowhere else, something rather more abrupt had happened. 但是，这层薄薄的黏土显然表明，在翁布里亚，如果不是在别处的话，事情发生得非常突然。
万物简史
BRUSSELS, April 6 (Xinhua) -- The European Commission（委员会） confirmed on Wednesday Portugal's intention to request a bailout, pledging to deal with the request as soon as possible. The Portuguese Prime Minister, Jose Socrates, today informed
英语新闻