奥地利的格里戈尔·施里伦扎厄在波兰扎科帕内的跳台滑雪世界杯比赛中腾空而起。

Gregor Schlierenzauer of Austria soars through the air during the ski jumping World Cup competition in Zakopane, Poland.

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科内尔强调称：“许多人都曾有过这样的经历，比如听计算机老师讲解如何打开菜单并完成一系列步骤。”

"Many people," Kornell noted, "have had the experience of listening to a computer instructor open a menu and go through a series of steps."

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当科内尔女士问及在线课程的效率时，她说会为学生们设立不同的水平标准来选择。

While Ms. Kirchner questions the instructional effectiveness of online courses, she said there was a place for them at some level.

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