单词：interrupted fatigue test
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A: I have a problem with my cable. B: What about it? A: My cable has been out for the past week or so. B: The cable is down right now. I am very sorry. A: When will it be working again? B: It should be back on in the next couple of days. A: Do I stil
英语情景对话-日常生活
情态动词 1.You ______ Jim anything about it. It was none of his business. (2004) A. neednt have told B. neednt tell C. mustnt have told D. mustnt tell (A，neednt have done表示本不必做而做了。没有mustnt have done的形式，但可以说
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Students Aim for Aviation History with Human-Powered Helicopter Within reach What seemed impossible when William Staruk began his PhD studies at the University of Maryland three years ago, is now within reach. He's part of a 50-member team developing
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Whose are these? 这些是谁的？They are mine. Do you want some? 是我的。你想要一些吗？Sure. Where did you get them? 好啊。你从哪里买的？I went to the market yesterday. 我昨天去了市场。They must be good apples. 这些苹果
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STEVE INSKEEP, HOST: Every year, more than 1 million children and adolescents sustain a concussion. The symptoms may vanish in days or last for months. And right now, doctors usually cannot predict how long the recovery will take. That could be chang
2017年NPR美国国家公共电台5月