单词：random fixation(wright 1931)of gene
单词：random fixation(wright 1931)of gene 相关文章
Alice: Hello, I'm AliceStephen: And I'm Stephen. Alice: And this is 6 Minute English! This week were talking about sleepwalking. Have you ever walked in your sleep, Stephen? Stephen: I dont think so, but Ive been known to tell stories in my sleep. Al
六分钟英语
Broadcast: Jan 21, 2003 U.S. researchers have discovered another breast cancer gene that may provide a new point of attack against the disease. The 1) molecule is common to many types of breast cancer
VOA2003（上）-科技先知
By Nancy Steinbach Broadcast: October 1, 2003 This is Faith Lapidus with the VOA Special English Health Report. Scientists in Iceland say they have identified the first gene linked to common forms of
VOA2003（下）-环境与健康
Evolving Toward Cancer Is it possible that humans evolved to get cancer? Thats what scientists at Ben Gurion University in Israel claim in a study. They found that the same genetic mutations involved in the evolution of modern humans also gave rise t
英语时差8，16
I know that every cell in my body has a copy of my DNA packed into its nucleus. And I also know that if I could somehow unravel the DNA from a single cell, it would be about six feet long. So my question is, is DNA jammed into the nucleus in a sort o
英语时差8，16
About six or seven million years ago chimpanzees and humans evolved from a common primate ancestor. Chimps went on to become the relatively small-brained, forest dwelling creatures we know and love. Humans went on to evolve large brains, spread throu
初学者听力文摘精选
Thomas Edison, 1847-1931: America's Great Inventor Edison is remembered most for the electric light, phonograph and his work with motion pictures. ANNOUNCER: Welcome to the VOA Special English program, People in America. Today, Sarah Long and Bob Dou
名人轶事
This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds an
Scientific American(三)月
SHIRLEY GRIFFITH: I'm Shirley Griffith. RAY FREEMAN: And I'm Ray Freeman with the VOA Special English program PEOPLE IN AMERICA. Every week we tell about someone important in the history of the United States. This week we tell about singer and songwr
2011年VOA慢速英语(二)月
PEOPLE IN AMERICA - Thomas Edison, 1847-1931: America's Great Inventor ANNOUNCER: Welcome to the VOA Special English program, People in America. Today, Sarah Long and Bob Doughty tell about the inventor Thomas Alva Edison. He had a major effect on th
2012年VOA慢速英语(八)月
Scientists Developing Salt-Tolerant Rice Scientists are developing a salt-resistant variety of rice. The move was prompted, in part, by last year's Japan tsunami, which flooded some 20,000 hectares of rice paddies. The rice varieties Japanese farmers
VOA标准英语2012年(一月)
Bacteria Thrive on Ocean Plastic Debris It takes about six weeks for a plastic bag or bottle to ride the surface currents from the U.S. East Coast to the Sargasso Sea, in the center of the North Atlantic. The area is a gyre, essentially a big whirlpo
VOA标准英语2013年(七月)
KELLY MCEVERS, HOST: There are a lot of reasons why people get cancer. Sometimes it's exposure to something toxic like smoke. Sometimes it's just bad genes. New research finds most of the genetic mutations that lead to cancer crop up naturally, and t
2017年NPR美国国家公共电台3月
Could you find out the premium rate for porcelain? 您能查一下瓷器的保险费吗？ OK, just a second. 可以，请稍等。 No problem. 没问题。 Can you tell me if particular average insurance includes compensation of goods damage? 请问单
外贸英语一点通
About six or seven million years ago chimpanzees and humans evolved from a common primate ancestor. Chimps went on to become the relatively small-brained, forest dwelling creatures we know and love. Humans went on to evolve large brains, spread throu
英语听力文摘 English Digest
A man accused of killing 5 women who were working as prostitutes has admitted he could have picked up all of them on the nights they disappeared. Steve Wright told Ipswich Crown Court, he might to have sex with 4 of the victims on those occasions an
英伦广角
Bacteria Thrive on Ocean Plastic Debris 海洋中的塑料碎片上滋养大量细菌 Plastic pollution in the ocean is harboring colonies of bacteria that could be harmful, not only to marine animals, but also to humans. 海洋中的塑料污染滋生
VOA常速英语2013年(九月)
今天我们要学的词是random。 Random, 是随机、任意的意思。The firefighters have to undergo a random drug test once a year, 消防队员每年要接受一次是否服用毒品的抽查。The boxer refused to submit random blood tests
英语每日一词
Coming in unannounced, drag my nails on the tile I just follow your scent, you can just follow my smile All of your flaws are aligned with this mood of mine Cutting me to the bone, nothing left to leave behind You ought to keep me concealed just like
英文摇滚歌曲
1931 overwhelm 今天我们要学的词是 overwhelm. Overwhelm 是动词，有超过承受能力的意思。Thousands of holiday gifts didn't arrive before Christmas because UPS was overwhelmed by higher-than-expected demand. 由于邮件数量超出了
英语单词荟萃