单词:
单词: 相关文章
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. As we recover from the holiday weekend, there is some intoxicating news on curbing the effects of alcohol. In the May 29th issue of Cell, scientists report
[00:04.91]54) Anti-sense Technology [00:10.55]Research scientists have reported success in using an experimental method [00:17.97]called anti-sense technology to treat people with cancer. [00:23.41]For years, researchers have tested anti-sense techno
People in America - Gene Kelly, 1912-1996: His Movies Made Dance Popular in America SHIRLEY GRIFFITH: I'm Shirley Griffith. STEVE EMBER: And I'm Steve Ember with the VOA Special English program, People in America. Every week we tell about a person im
Hundreds of thousands of Mexicans have marched in locations across the country to demand a stop to a wave of killings, abductions and shootouts. James Blears reports from Mexico City. Thousands hold up lit candles at the main Zocalo square in Mexico
By Deborah Block Washington 22 May 2008 President Bushsigned a new anti-genetic discrimination bill on May 22.He says the act protects Americans against misuse of their genetic information by employers and insurance companies. The U.S. House of Repre
Study: Living In A City Might Make You Crazy Ever wondered why those apple-cheeked Himalayan villagers look so untroubled, even as most of your friends and family make weekly visits to the therapist? You might finally have your answer -- and it reall