科学60秒:"以身犯险"诈骗术
【视听版科学小组荣誉出品】
科学60秒:握个手没什么大不了
It’s graduation season. And some scientists got to wondering whether the folks who shake hundreds of hands while passing out diplomas ____1___ coming away with a fistful of infectious microbes, ...
科学60秒:氟化物护牙之谜仍未解
Beauty is only ____1____. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shield than experts thought it did. The results...
社会:白人消防员声称遭到“逆向歧视”
社会:白人消防员声称遭到“逆向歧视”The U.S. Supreme Court made rules this week on a very controversial case. New Haven, Connecticut firefighters say they are victims of reverse discrimination. A...
朝鲜核武会谈有望重开(1)
美国务卿助理希尔称美朝核武会谈有望重开Christopher Hill, the U.S. assistant secretary of state, says a banking transfer that has held up North Korean nuclear diplomacy for months is likely to be r...