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RANDI KAYE, CNN CORRESPONDENT: We take our shoes off, remove our laptops, and toss our bottled water all in the name of safety. But are we any safer today than we were before 9/11? Not exactly, says Bruce Schneier, author and security technologist. B
CNN2010年(一)月
[00:01.56]Gunpowder [00:03.47]Gunpowder was invented by the Chinese [00:05.73]in the eighth century AD. [00:08.28]Early Chinese scientists discovered [00:10.64]that they could make an explosive substance [00:12.76]by mixing sulphur,charcoal and saltp
北师大版高中英语模块7(选修)
Independence Day 词汇典故:独立日 Hello and welcome to the VOA Learning English program Words and Their Stories. Independence Day is a huge celebration in the United States. People celebrate by having parades and picnics and usually end the day
2015年VOA慢速英语(七)月
STEVE INSKEEP, HOST: When fighters for ISIS abandoned their capital, they left behind a deadly parting gift. Islamic State fighters salted that city, Raqqa, with explosive booby traps. Now, young Syrian men are training to remove them. NPR's Tom Bowm
2018年NPR美国国家公共电台2月
萨拉热窝市中心爆炸，无一人伤亡 SARAJEVO, Feb. 10 (Xinhua) -- A huge explosion was heard in central Sarajevo Monday night, and police said there were no injuries. A local police press officer told Xinhua the explosion occurred at the en
英语新闻
模仿文本： The explosive, highpitched call of the coot is probably a sound most of us associate with our local park lakes. Coot are dumpy, charcoalcoloured birds related to moorhens, although unlike their cousins, they tend to spend more time in
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