基因功能研究新方法(1)
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- 七年级英语上册
科学60秒: 赌博是祖上传下来的
Many of us ___1___ to devote to trying out the latest Wii game or even watching others play poker on TV. But this focus on play is nothing new, says a researcher at Sweden’s University of Gothen...
防止食物变质的妙方 (1)
Nigeria Mohammed Bah Abba A few degrees can make a big difference when it comes to food storage. Foods can go bad if they get too warm. But for many of the world's poor, finding a good way to ke...
麦凯恩提出新的经济计划 (1)
离大选还有三个星期,麦卡恩提出一系列经济计划以争取民意。Senator John McCain announced a series of steps he would take if elected that are intended to help middle-class Americans cope with the ong...
高清晰电视(1)
竞争常意味着等待人们做出选择。比如VCR-卡带式录像机的例子...Competition often means waiting for people to make a choice. That was the case with VCRs, video cassette recorders. During the nineteen ...