单词：chemotactic repellant
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This is scientific Americans 60-Sencond Science. I am Karen Hopkin. This will just take a minute. When you think about silk, you probably think of gossamer fibers woven into lustrous garments or decadently soft bedsheets. But silk is also prized for
Scientific American(四)月
DAVID GREENE, HOST: Today in Your Health, we're taking a close look at chemotherapy. It's been a mainstay of cancer treatment for decades, but that method is slowly being edged aside in medical research as new treatments, like immunotherapy, grab the
2017年NPR美国国家公共电台3月
Hardline Stance on Iran Nuclear Deadline Could Be Pressure Tactic STATE DEPARTMENT As the March 24 deadline nears for Iran nuclear negotiators to agree on the fundamental structure of a final deal, both the U.S. and Iran increasingly have been vocal
VOA标准英语2015年(二月)
AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster -- we invest some time with the author of a book about financial terms. SCOTT: Stock markets around the world have done fairly well, but in the U.S. money has come back into stocks
英语单词大师-Word Master
英语作文 The biggest difference between animals and human is that human can think. So we have emotions. Love,hatred and grief are emotions.I was an emotional boy since I was young.I love to watch the dark sky,the moon and the stars.They always make
英语作文
By Benjamin Sand Islamabad 16 March 2007 Tension is mounting throughout much of Pakistan as protests continue over the controversial suspension of the country's top judge. From Islamabad, VOA correspondent Benjamin Sand reports the chief justice vows
2007年VOA标准英语（三月）