单词：adjustable level
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Unit 4 When was it invented? [00:07.36]Section A [00:09.76]Language Goal [00:11.54]Talk about inventions [00:14.31]1a GROUPWORK [00:17.59]Look at the things below. [00:20.27]In what order do you think they were invented? [00:24.94]Number them [1-5] (
初中英语山东版九年级（全一册）
This is the VOA Special English Economics Report. As the American housing market has cooled, worries about investments based on risky home loans have heated up. Last month, two hedge funds operated by the investment bank Bear Stearns nearly collapsed
VOA慢速英语2007年（七）月
自拍是普通人最喜欢的一种消遣方式，而目前有一种提升自拍效果的新神器正迅速成为我们大家生活的一部分。它就是selfie stick（自拍杆）。 A selfie stick is a monopod used to take selfie photographs by
英语口语
1 Sound Design When it comes to creating a productive office environmentits more than just four walls. According to a Cornell University study, even low-level noise in open-style offices can result in higher levels of stress and lower task motivation
实用英语
LONDON, Nov. 3 (Xinhua) -- Weight loss surgery could reduce the risk of developing type 2 diabetes by around 80 percent in obese people, according to a new research published Monday in the British medical journal The Lancet Diabetes Endocrinology. Us
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