单词：had a clue
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A: I'd like to have internet on my computer. B: Do you know what kind of internet you would like to get? A: What are my options? B: You can either get dial-up or DSL. A: Which one would you recommend? B: DSL is the best choice. A: Why is DSL better?
英语情景对话-日常生活
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单词解析速记
Seventy-nine degrees north latitude is near the top, at the cold edge of the world. In the winter, when temperatures plunge below freezing, there is complete darkness at noon. During summer, the sun shines at midnight, there is no place to hide. Dang
国家地理2007年
By Cynthia Kirk ENVIRONMENT REPORT -May 31, 2002: Coqui Frogs Invade Hawaii This is the VOA Special English ENVIRONMENT REPORT. Experts say the American state of Hawaii has been invaded by a small fro
健康与环境
BEIJING, June 21 (Xinhua) -- China will launch a new icebreaker for use during an upcoming 2013 polar expedition, a senior oceanic official said on Tuesday. Both the new icebreaker and Xuelong (Snow Dragon), an icebreaker that operated in Antarctica,
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