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No body had had seen this kind of thing before, so this was the first time and all the people looking at the gel and saying
基因外遗传现象
It showed that there was clearly more to inheritance than simply the coded sequence of DNA. We then realized that we were dealing with what is now known as genomic imprinting. What genomic imprinting
基因外遗传现象
We are on the brink of uncovering a hidden world, a world that connects past and future generations in ways we never imagined possible. What this means is an environmental exposure that your grandmoth
基因外遗传现象
By Cathy Majtenyi Nairobi 30 November 2006 On the eve of World AIDS Day, Kenyan doctors and activists are calling on the Kenyan government to declare tuberculosis a national disaster and enact special legislation to deal with the highly contagious d
2006年VOA标准英语（十一月)
International AIDS Day provides an opportunity to examine the efforts to combat the deadly virus that attacks the human immune system. In South Africa, whose 5.7 million HIV victims make it the most affected country in the world, officials and activi
VOA标准英语2010年(十一)月
Mark: Hey, Todd, when you look back on your high school experience, do you, in general, do you see it as a positive or a negative experience? Todd: Oh, definitely positive. It was one of the best times of my life. Mark: Yeah. Todd: Oh, it was awesome
原版英语对话1000个
The impact of a famine being captured by the genes in the eggs and sperm, and a memory of this event was being carried forward to affect the grandchildren, generations later. We are changing the view
基因外遗传现象
Scott Stearns President Bush says he has a strategy for restoring security and transferring political power in Iraq. His presumptive Democratic challenger, Massachusetts Senator John Kerry, says the p
VOA2004（上）--国际时事
Florida Shooting Highlights Racial Profiling Controversy Across the United States, there are calls for action in the killing of Trayvon Martin. Martin is the 17-year-old shot dead in a confrontation with neighborhood watch volunteer George Zimmerman.
VOA标准英语2012年(四月)
Work crews have started paving Southern Sudan's first highway, which will connect the new nation to the international community. This highway brings the south one step closer to full independence. A military band welcomed Southern Sudan's president,
VOA标准英语2011年(二月)
A: What are you doing here today? B: I would like to fight my ticket. A: Is the arresting officer in the courtroom today? B: Yes, the officer is here today. A: What's your case? B: I was pulled over for running a red light, but I never did. A: Do you
英语情景对话-驾驶
A: Why are you in court today? B: I got a ticket, and I would like to fight it. A: Is the officer that pulled you over here today? B: He's here. A: Tell me what happened. B: The officer says that I ran a red light, but I didn't. A: The officer wouldn
英语情景对话-驾驶
How To Talk To Young People About The Kavanaugh Story STEVE INSKEEP, HOST: There can be no doubt that this has happened to a lot of parents lately. They're in the car with their kids, and the radio is on, and a story about Christine Blasey Ford comes
2018年NPR美国国家公共电台9月
President Bush and Democratic challenger Senator John Kerry used their political parties' weekly radio addresses to campaign for an election that is just 10 days away. 美国总统布什和民主党总统候选人克里参议员利用各自政党的每
VOA双语新闻 Bilingual News
U.S. and Iraqi forces have pushed into the insurgent stronghold of Samarra, north of Baghdad and taken control of key government buildings and religious sites. U.S. military officials estimate close to 100 insurgents were killed, and say one U.S. sol
VOA双语新闻 Bilingual News
When I got home from work, I opened my mail. The letter turned out to be a bombshell. I held in my hand an invitation to my 10- year high school reunion. It was a shock because I couldn't believe it had been 10 years. The first thing I did was to cal
地道美语播客
Todd: OK, Shane, why don't you talk a little about why you came to Japan? Shane: Well, I suppose the reason why I came to Japan is because, I suppose it's a personal thing. There's many different people in Dublin, different types of people. I do not
原版英语对话1000个
Joel: So, you're from a smaller island. What kind of concerns do people on your island have or what kind of concerns do you have? Patricia: For the world you mean? Joel: Right. Right. Patricia: Well recently, when I was in high school I had a friend'
原版英语对话1000个
今天我们要学的词是trick-or-treat。 Trick-or-treat, 是10月31号万圣节孩子们装扮成各式神仙鬼怪，挨家挨户索要糖果时说的一句话，意思是最好给糖，否则我们就要捣蛋。这些孩子就是trick-or-treat
英语单词荟萃