单词：pedologist
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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
Pope Benedict has apologized for sexual abuse in the Catholic Church in Australia and has insisted that those responsible should be brought to justice. The pope told a mass in Sydney Saturday sexual abuse by clergy had brought shame to the Catholic
VOA标准英语2008年（七月）
'Don'tAsk'RepealGivesGayActivistsRenewedHope The law banning homosexuals from openly serving in the U.S. military has been repealed, sparking celebrations among gay organizations. Since its implementation in 1993, thousands of service people have bee
VOA标准英语2011年(九月)
By Paula Wolfson White House 17 January 2007 Big changes are being made in a highly controversial domestic surveillance program launched by the Bush administration after the September 11, 2001 terror attacks on the United States. VOA's Paula Wolfson
2007年VOA标准英语（一月）
By Carol Pearson Washington, DC 08 November 2006 watch Heart Stent report Heart stents are lifesaving medical devices that help prevent heart attacks. Most of these stents are coated with various drugs, but mounting data suggest drug-coated stents c
2006年VOA标准英语（十一月)