In 1942, Congress passed the United States Flag Code, creating official standards for how we treat our beloved flag. 1942年，国会通过了"美国国旗法"，法案制定了官方标准，指导我们如何对待珍视的国旗。 From this code, we teach each new Ameri

But then I also remember that times of rapid change can bring pain and confusion, even destruction, as well as progress and excitement. The more rapid and exciting it is, the more change calls for car

And the big thing for me is economic growth, which is not possible without safety and security. 促进经济增长是我的大事，而若缺少安全和保障，经济便难以好转。 We will grow our economy; it is growing already. 我们要发展我们的经济，而现已初见成效。 It w

帕特里夏·库尔讲了有关婴儿学习不同语言的惊人发现，婴儿聆听围绕在他们身边的人类声音并对他们要知道的声音做统计。精巧的室内试验和脑部扫描呈现6周大的婴儿如何使用复杂的统计推理来感知世界。这可能就是为什么少儿英语这么火的原因了。 patricia kuhl: the linguistic genius of babies 婴儿的语言天赋 i want you to take a look at thi

September 28, 2007 10:09 A.M. EDT THE PRESIDENT: Good morning. Thank you. Welcome to the State Department. I'm honored to address this historic meeting on energy security and climate change. And I app