多极式阳极

Can't She Type?

Lesson 38 Text A Can't She Type? The well-known banker, T. J. Ellington, was at one time in his younger days the manager of a New York office. His secretary had been with him for many years, and knew

发表于:2018-12-02 / 阅读(144) / 评论(0)

初级口语教程

CNN 2010-05-16

Vicious weather in the southern plains. Two deadly tornadoes swirling in unison in southern Oklahoma. All of it caught on tape. There comes one right there. Look at them. They are all over. As you can hear, storm chasers were only reporters because i

发表于:2019-01-08 / 阅读(104) / 评论(0)

CNN2010年(五)月

SSS 2009-04-06

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

发表于:2019-01-08 / 阅读(79) / 评论(0)

Scientific American(四)月

SSS 2011-09-09

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion

发表于:2019-01-08 / 阅读(81) / 评论(0)

Scientific American(九)月

2012年手机将实现无线充电

日本富士通实验室的研究人员开发了一种无线充电系统，可同时给一定范围内的手机、数码相机及手提电脑等各种移动设备充电，无需使用电缆。该系统最早可于2012年正式推出使用。该系统被

发表于:2019-01-19 / 阅读(133) / 评论(0)

阅读空间

托福阅读详解之摄影史

托福频道在此与大家分享托福阅读之摄影史(The Birth of Photography)，其中包括托福阅读词汇及词汇在文中的使用以及相关题目。希望对大家复习托福阅读有所帮助。 Perceptions of the visible world were

发表于:2019-02-12 / 阅读(50) / 评论(0)

托福英语

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active picture elements

address decode signal