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  • 数学英语 19 What are Natural Numbers?

    by Jason Marshall Do you remember your very first encounter with numbers? No, I dont either. But I imagine it might have involved someone pointing to each of my fingers in turn, and with great fanfare, counting aloud: One, Two, Three, Four, Five! And...

  • 2005年NPR美国国家公共电台三月-Jobless with a College Degree: The Number

    The US economy continues to recover from the tech bubble burst of 2000. But there're certainly many people still left behind. Long-term unemployment which is defined as being out of work for 27 weeks is at record levels. And within that group,the per...

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