Lesson 2 Love of Numbers Words: absenteeism n. 旷课,旷工 absentee n. 缺席者 absolve v. 宽恕;赦免(罪行、过失等),解除(责任等) absorb vt. 吸引(液体、知识等);理解,掌握 absorbing adj. 吸引人的,引

发表于:2018-12-05 / 阅读(63) / 评论(0) 分类 胡敏托福词汇记单词

No matter how seldom you've opened that calculus textbook on your shelf, the chances of worms having eaten it are pretty low. But books written back in the Renaissance have had much better odds of becoming worm food. Now we know that the holes left b

发表于:2018-12-24 / 阅读(47) / 评论(0) 分类 Scientific American(十一)月

No matter how seldom you've opened that calculus textbook on your shelf, the chances of worms having eaten it are pretty low. But books written back in the Renaissance have had much better odds of becoming worm food. Now we know that the holes left b

发表于:2018-12-24 / 阅读(54) / 评论(0) 分类 Scientific American(十一)月

No matter how seldom you've opened that calculus textbook on your shelf, the chances of worms having eaten it are pretty low. But books written back in the Renaissance have had much better odds of becoming worm food. Now we know that the holes left b

发表于:2018-12-24 / 阅读(53) / 评论(0) 分类 Scientific American(十一)月

Carlos: Did you get your class schedule? Marianne: Yeah. You? Carlos: Yeah. Lets see if we have any classes together. I have PE with Mr. Lopez and social studies with Ms. Walters. How about you? Marianne: I have PE with Ms. Schwartz and social studie

发表于:2019-01-01 / 阅读(58) / 评论(0) 分类 地道美语播客

分集介绍:指数,log,对数微分;双曲函数 Exponential.and.log.Logarithmic.differentiation;.hyperbolic.functions

发表于:2019-01-05 / 阅读(368) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

分集介绍:导数,商数,正弦和余弦 Derivatives.of.products.quotients.sine.cosine

发表于:2019-01-05 / 阅读(316) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

A 33-year-old financial analyst in California recently quit his job to devote himself to an unpaid job teaching math on the Internet, and his lessons are reaching almost 100,000 people a month. In this week's edition of Making a Difference, we introd

发表于:2019-01-13 / 阅读(80) / 评论(0) 分类 VOA标准英语2010年(三月)

阿美接到了北京大学的录取通知书,但是古奇却没有任何消息。虽然考试没有考好,但古奇却十分高兴,这到底是为什么呢? Listen Read Learn May: I have received the admission letter from Peking University! Gucci: Congratulations! May: How about you? Have you g

发表于:2019-01-21 / 阅读(60) / 评论(0) 分类 英语口语大赢家

When you start off coming out of the egg and youre less than, say, 2 feet long and you are in a world full of predators that are loving to crunch on you, then you need to get big fairly quickly. The future seems bleak for this dinosaur. With its life

发表于:2019-01-23 / 阅读(62) / 评论(0) 分类 探索与发现2013年