Middle school and high school students from across the country descended on the State Dining Room at the White House today with their award-winning science fair projects in tow. From a robot that play

After a lethal 1995 heat wave 在历经了1995年致命热浪侵袭后， turned refrigerator trucks from the popular Taste of Chicago festival into makeshift morgues, 它将那些在芝加哥美食庆典的冷藏车转换成临时搭建的停尸间 Chicago became a recognized le

June 3, 2007 11:02 AM MDT THE VICE PRESIDENT: Thank you, Ron, and thank you for that warm welcome. It's great to be home again, back at Boys State -- 49 years since I sat where you sat. But I couldn't

But personal DNA machines can also save human lives. 但个人DNA检测器还可以挽救人类的生命。 Professor Ian Goodfellow is a virologist at the University of Cambridge. Ian Goodfellow教授是剑桥大学的病毒学家。 Last year he traveled to

So for example, "The Cat in the Hat Comes Back," a book that I'm sure we all often return to, like "Moby Dick." 例如，《戴帽子的猫回来了》，这本书我相信很多人还经常读，又如《白鲸记》。 One phrase in it is, "Do you know where I found him