单词：geriodontist
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By Efam Dovi Accra 31 March 2007 Ministers from the Economic Community of West African States have agreed to use biotechnology to increase food production in their region. The agreement was reached at the third ECOWAS ministerial meeting on biotechno
2007年VOA标准英语（三月）
AMERICAN MOSAIC -April 19, 2002: Jazz Violinist Regina Carter / Question about the Washington Monument / Museum Show on Wood Turning Broadcast: HOST: Welcome to AMERICAN MOSAIC — VOA’s radio magaz
American Mosaic
This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute. Biologists, traditionally track migrations by tagging animals with devices that allow their movements to be monitored. But Homo sapiens can't be fitted wi
Scientific American(六)月
Renee Montagne: Hundreds of thousands of Americans have back surgery every year at a much higher rate than any other country. Whether there are too many back surgeries is a hotly debated subject in orthopedist , NPR's Joanne Silberner examines the q
2006年NPR美国国家公共电台
Pro-Taliban extremists in northwestern Pakistan have killed 22 members of a pro-government tribe. The remote violence-plagued area borders the volatile tribal region of South Waziristan on the Afghan border, which is believed to be a safe haven for
VOA标准英语2008年（六月）
Lesson 229 Dont' you dare! 1.Don't you dare!你敢！ 2.Try it if you dare.要是你敢，就试 试看。 3.I dare not say.我不敢说。 4.How dare she go?她怎么敢去呢？ 5.Don't dare do that again!别再这样 胆大妄为！
辛沛沛NO-BOOK 辛沛沛傻瓜机口语极短句