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Kaillie Humphries aims for gold in new Olympic sport, monobob.

Most bobsledders approached their few precious training runs on China’s snow dragon as if they were college students cramming for a midterm, trying to learn as much as possible in a short time frame before the big test.

Kaillie Humphries of the United States was the only athlete among the field of 20 who skipped the final monobob training heats on Saturday at the National Sliding Center. She had the track — its nuances and tendencies — memorized.

On Monday, she will try to prove that her instincts were correct in the inaugural monobob event, in which one female athlete pushes and pilots her sled down the icy track.