单词:two-stage experiment
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Education Report - College Students Get Into Microfinance Lending This is the VOA Special English Education Report. Imagine that you have lost your job.You could start a sewing business at home if you had a better sewing machine and a little money to
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The Gulf of Mexico oil disaster comes during spring spawning season, an especially bad time for aquatic life making them extraordinarily vulnerable to the toxic effects of the oil itself, says Doug Rader, chief oceans scientist for the Environmental
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