Dear Hans van den Broek: 亲爱的汉斯·范登布鲁克： Thank you for your letter telling me of the removal of one of my books from the Nijmegen library. And that it is accused of discrimination against black people, h

November 1, 2007 THE PRESIDENT: Thank you. Ed, thanks. Thanks for the kind introduction. I'm looking forward to working with you for the next 14 months -- but you better put on your running shoes, bec

Obama's Weekly Address WEEKLY ADDRESS: Raise The Minimum Wage – It’s The Right Thing To Do For Hardworking Americans 奥巴马每周电视讲话:副总统乔拜登呼吁提高最低工资标准 回报辛勤付出的美国人民 Ladies and gentlemen, I'm Joe Bi

Q If I could add to that, just one thing, which is, it’s really not necessary to replace the windows to get that energy efficiency. Didn’t somebody write about the caulking gun（油灰枪） ? THE

And this is a form of learning called active learning, 这是一种学习形式叫做主动学习， and really promoted by a very early paper, in 1972, by Craik and Lockhart, where they said and discovered that learning and reten