单词：producd fibers
单词：producd fibers 相关文章
By Mil Arcega Washington 04 September 2007 Americans work longer hours and produce more per person than their counterparts in other developed countries. But according to the findings of a United Nations report released Monday, worker productivity aro
2007年VOA标准英语（九月）
A report in the journal Science announces the finding of the oldest known human-fashioned threads, left in a cave by the Caucasus mountains about 34,000 years ago. Cynthia Graber reports. We humans love to decorate things. We wear flashy clothes, ti
60秒科学
One of Haiti's most well known exports and a symbol of national pride is back in business. Barbancourt's rum was first distilled in Port au Prince in the 1860's by Dupre Barbancourt, a French cognac maker. The company maintained production through Ha
VOA标准英语2010年(六)月
The surgeon was a pioneer in open heart surgery, artificial hearts and heart transplants. He worked up until his death this month in Houston, at age 99. Transcript of radio broadcast: 22 July 2008 This is the VOA Special English Health Report. Micha
VOA慢速英语2008年（七）月
ConservationistsTryingtoSave,ReproduceEndangeredFrogs Forty percent of all the frogs in the world are in danger of extinction, according to the Smithsonian Institution. Pollution, pesticides, climate change and now a fungus are taking a toll on this
VOA标准英语2011年(九月)
VOICE ONE: I'm Steve Ember. VOICE TWO: William Shakespeare And I'm Barbara Klein with EXPLORATIONS in VOA Special English. Today, we tell about one of the most influential and skillful writers in the world. For more than four hundred years, people al
2010年慢速英语(一)月