As a dutiful immigrant son, To put aside his high-school love of humanities to pursue a major in engineering at Columbia, but soon gravitated toward a business career.

作为一位移民的后代，杜聪遵从家人的意见，放弃了高中时喜欢的人文学科，转而在哥伦比亚大学选择工程专业，但不久便投身商业生涯。

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Many students, including Dixie Johnston, a senior at Hickman High School in Columbia, Missouri, said that although their teachers have school-sponsored pages, most students rarely check them.

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The set hints at life beyond high school, including a Columbia University dormitory room that appears to be outfitted for female freshman, with sparkly sneakers and film-noir posters.

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The new guidelines also are more in line with laws in 43 states and the District of Columbia that require youth and high-school athletes to be removed from play and to return only after at least 24 hours and with the permission of a health-care professional.

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