单词：Alcaligenes marshallii
单词：Alcaligenes marshallii 相关文章
“I have a dream...” It is among the most celebrated speeches in American history. “My four little children will one day live in a nation where they will not be judged by the color of their skin
疯狂英语2002年
DAVID GREENE, HOST: The artist Kerry James Marshall has a remarkable history. He was born in Birmingham, Ala., and was a little boy when Martin Luther King Jr. was in jail there. Later, his family moved to Los Angeles not long before the Watts riots.
2017年NPR美国国家公共电台3月
In this Moment of Science Yael and Don discuss how women can see more color. Yael: Not only are eight percent of men colorblind, but even compared to men who can distinguish between reds and greens, many women may live a more colorful existence. That
英语听力文摘 English Digest
He helped change racial separation laws in America. Transcript of radio broadcast: 26 July 2008 VOICE ONE: This is Gwen Outen. VOICE TWO: And this is Doug Johnson with People in America in VOA Special English. Every week we tell about a person who w
VOA慢速英语2008年（七）月
Marshall Chapman Shows No Signs of Slowing Down Blaze of Glory isnt just the title track to Marshall Chapmans latest CD, its a premonition she once had. Living the hard life of a rock-and-roller, Chapman never figured shed live past 40. But at 39, af
VOA标准英语2013年(六月)
(WA) Before moving on to a new topic, I want to finish up our unit on arachnids by looking at what may seem a very unusual aspect of spider behavior --- a species where the young spiders actually consume the body of their mother. Unlike most other s
托福听力短文
Shareholders of the telecommunications equipment manufacturers Alcatel and Lucent have approved an $11 billion merger of the two companies. The new company, which will be called Alcatel Lucent, will be the world's largest telecommunications equipmen
初级商务英语听力2006
What Is Progeria? Progeria was first described in the nineteenth century. The mysterious disease is often thought of as premature aging. Children with progeria are normal for their first year of life, but then develop medical problems normally seen i
英语听力文摘 English Digest
By George Lewinski Washington 01 June 2007 On June 5th, 1947, U.S. Secretary of State George C. Marshall told the graduating class at Harvard University that Europe and the world were in a perilous state. World War II had devastated the continent and
2007年VOA标准英语（六月）
PEOPLE IN AMERICA - Thurgood Marshall By Paul Thompson Broadcast: Sunday, May 16, 2004 (MUSIC) VOICE ONE: This is Gwen Outen. VOICE TWO: And this is Doug Johnson with People in America in VOA Special
People in America
MICHEL MARTIN, HOST: And finally, we have one more film to tell you about that opened Friday. It focuses on a little-known moment in the career of the late civil rights icon Thurgood Marshall. Long before Marshall became the first African-American to
2017年NPR美国国家公共电台10月
Winter Wheat According to the famous song, America is beautiful for its spacious skies, purple mountains, and amber waves of grain. If you were to make a music video based on these lyrics youd probably want mid to late summer images of fruit-laden tr
英语听力文摘 English Digest
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
Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todayss Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm
英语听力文摘 English Digest
Nutrigenomics The study of genes has shown that every individual is genetic ally unique, and this discovery leads to a host of questions as to the relationship between an individuals genes and environmental factors such as diet. That is, how does die
英语听力文摘 English Digest
DNA Wrath of Khan 成吉思汗疯狂的基因 Today, Afghanistan is a war-torn region, battled over by military forces and world-spanning empire s . Eight hundred years ago things were much the same. Only then, there was only one ruler: Genghis Khan.
英语听力文摘 English Digest
Dmitry Belyaev, Foxes, And Domestication 你与猫或狗玩耍过吗？在远古，狗对我们的祖先来说还是一种比较危险的动物呢。那么，现在为什么它们这么听话？我们的祖先又是如何驯化它们的呢？今天，就
英语听力文摘 English Digest
Nutrigenomics 营养基因组学（nutrigenomics 或nutritional genomics，又叫营养遗传学 nutrigenetics）是研究营养素和植物化学物质对机体基因的转录、翻译表达及代谢机理的科学。 膳食是影响人体健康最重
英语听力文摘 English Digest
Mans Best Friendin All Shapes and Sizes Scientists are making great strides in understanding the genes that allow such a wide range of shapes, sizes and personalities in different dog breeds. Did you know domestic dogs were bred from wolves about 15,
英语听力文摘 English Digest
Fatherless Honeybee s How male honeybee s can be without fathers? The reason lies in whats called a haploidiploid system of sex determination. Approximate ly one-fifth of the animal kingdom, including ants and wasp s , use this system. What it boils
英语听力文摘 English Digest