刘柏川: 为何普通民众需要懂得权力。 I'm a teacher and a practitioner of civics in America. Now, I will kindly ask those of you who have just fallen asleep to please wake up. (Laughter) Why is it that the very word "ci

Today, we have young women like this one teaching villages in Africa how to put their animals together into larger herds, plan their grazing to mimic nature, 今天，我们有像这样的年轻女性在非洲的村庄里传授技术，如何把他们的动物集合成一大群，如

But this question lingers and I continued to be troubled by the unequal distribution of scientific knowledge throughout the world. 但这个问题仍旧萦绕着我，我依旧会被世界上科学知识的分布不均衡问题所困扰。 We have learned to edit the huma

That is an astonishing statement and yet proven a thousand times every day of our lives. It expresses, in part, our inescapable connection with the outside world, the fact that we touch other people&#

听力文本: In pockets of excellence across this country, we are seeing what children from all walks of life can, and will achieve, when we set high standards, have high expectations when we do a job of pre