摘要
In a dome-shaped outdoor cage, a dozen chimpanzees are hooting1. The hair on their shoulders sticks straight up. "That’s piloerection," a sign of emotional arousal, says Dr. Dana Hasselschwert, head of veterinary sciences at
In a dome-shaped outdoor cage, a dozen chimpanzees are hooting1. The hair on theirshoulders sticks straight up. ＂That＇s piloerection,＂ a sign of emotional arousal, says Dr. Dana Hasselschwert, head of veterinary sciences at the New Iberia Research Center.2 She tells a visitor to keep his distance.
出处
《大学英语》
2012年第2期32-33,共2页
College English
