这些访问码的价格通常在每门课程80美元到155美元之间不等，学生需要通过这些访问码才能在线使用麦格劳·希尔和培生等教育公司开发的系统。

The codes—which typically range in price from $80 to $155 per course—give students online access to systems developed by education companies like McGraw Hill and Pearson.

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她告诉BuzzFeed新闻，她的大一化学课要求她使用麦格劳·希尔公司提供的Connect系统，学生可以在该系统中提交作业、参加考试并跟踪他们的成绩。

She told BuzzFeed News that her freshman chemistry class required her to use Connect, a system provided by McGraw Hill where students can submit homework, take exams and track their grades.

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麦格劳·希尔公司没有对评论的请求给出回应，但其首席执行官戴维·莱文在8月份告诉《金融时报》：“在高等教育领域，印刷教材的时代已经结束。”

McGraw Hill didn't respond to a request for comment, but its CEO David Levin told the Financial Times in August that "in higher education, the era of the printed textbook is now over."

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麦格劳·希尔公司股价上涨4%。

McGraw-Hill shares were up 4%.

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自从今年夏天总公司麦格劳希尔公司处于困境以来，一些在《商业周刊》的资深编辑相继离职。

There have been some big editorial departures at BusinessWeek since parent company McGraw-Hill put the beleaguered magazine on the block this summer.

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麦格劳·希尔图书公司，股份有限公司，纽约和伦敦，1941年。

McGraw-Hill Book Company, Inc., New York and London, 1941.

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麦格劳·希尔图书公司，股份有限公司，纽约和伦敦，1941年。

McGraw-Hill Book Company, Inc., New York and London, 1941.

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