单词：postoptimality problem
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A: I'm calling today about a bill that I never received. B: Can you tell me which credit card it was for? A: It was for my Master Card. B: You should've gotten that bill two weeks ago. A: I haven't got it in the mail yet. B: The computer is showing t
英语情景对话-日常生活
So I am a movement chauvinist. I believe movement is the most important function of the brain -- don't let anyone tell you that it's not true. 所以说，我是个运动沙文主义者，我认为运动是大脑最重要的功能，不要让别人告诉
TED演讲教育篇
Topic 1: Air PollutionAir pollution in China has become so bad that some Chinese scientists have gone so far to compare it to a nuclear winter. While the capital seems to get the most attention, both domestically and internationally, it is most certa
英语角-圆桌会议
ALISON STEWART: The number of women in the U.S. who die in childbirth is nearing the highest rate in a quarter-century. An estimated 18.5 mothers died for every 100,000 births in 2013, compared with 7.2 in 1987. The Post reports that this translates
PBS访谈健康系列
09年12月六级作文预测及范文（24） Directions: For this part, you are allowed 30 minutes to write a short essay entitled How to Eliminate Fake Diplomas? You should write at least 150 words following the outline given below: 1)目前假文凭现象屡见不鲜 2)
四六级写作指导
Joel: Hey, Michele. Michele: Hi. Joel: You don't look very happy. What happened? Michele: Oh, well, I'm a little bit frustrated. Joel: Why? Michele: Well, I went to the bank today and I couldn't communicate well because my Japanese wasn't good enough
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