单词：
单词： 相关文章
by Jason Marshall Weve spent the last few articles building our numerical vocabulary from the ground up. Today, were going to talk about something that sounds hard, but is actually pretty easy...and very useful too: the commutative property of additi
数学英语
Want to create a high performance environment? My guess is that you already know many of the characteristics listed below. But, you may need some incentive to motivate you to create that type of space. In high performance environments you * are comfo
英语小短文
Most Accurate Projection of Polar Ice Melt Produced to Date Measuring ice sheets is a tricky business. Over the last two decades, dozens of studies on ice loss have come up with conflicting results. Now, a global scientific team, reporting in the jou
VOA标准英语2012年(十二月)
Experts: Gun Violence Is Public Health Crisis in US 专家称枪支暴力引发美国公众危机 WASHINGTON Gun violence in the United States has claimed the lives of more than 30,000 men, women and children in recent years, according to the Centers
VOA常速英语2013年(九月)
Afghanistan's election committee has rejected President Hamid Karzai's request to move up the date for presidential elections to late April. In a widely anticipated announcement in Kabul, the committee said it still considers August 20 as the ideal
VOA标准英语2009年(三月)
2013年7月6日雅思考试 Space travel has been possible for some time and some people think the space tourism could be developed in the future. To what extent do you think it's a positive or negative development? 太空旅行即将成为可能，人
雅思英语