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[090217] 파워포인트 2007 – 발표를 빛내는 파워포인트 핵심 기능 7가지

  Studies indicate that the one quality all successful people have is persistence. They are willing to spend more time accomplishing a task and to persevere in the face of many difficult odds. There is a very positive relationship between people’s ability to accomplish any task and the time they are willing to spend on […]