Waste-Resource At A Wrong Place废物在错了地方资源 Every day, people have lots of waste to throw away. Such as used handkerchiefs, plastic bags, boxes, bottles ...
幸福的密码The Code of Happiness Last night, I read the news about a professor who wrote the paper 20 years ago. He did some research about asking people whether they were happy an...
电脑能代替纸笔吗?Can Computer Replace Paper and Pen 提纲: 1.电脑在曰常生活中的重要性。 2.电脑取代纸笔的趋势。 3.现阶段电脑与纸笔的关系。 People often say we have entered the electronic age. Comp...