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托福听力练习-科学美国人60秒:大斋节

2017-04-11 09:39:00来源：科学美国人60秒

点击查看>>科学美国人60秒音频：大斋节

　　科学美国人60秒听力练习：大斋节

　　科学美国人60秒英文文本

　　Many Christians give up meat for Lent, a practice that indirectly affects…hyenas, believe it or not.

　　In northern Ethiopia, hyenas have become accustomed to scavenging meat that humans throw away. However, Ethiopian Orthodox Christians go vegan for the 55 days before Easter.

　　Scientists wondered whether the human dietary change affected the behavior of local hyenas. At three different sites where hyenas scavenge from humans, the researchers swept up hyena droppings. They collected samples as the fast began, when it ended 55 days later and then again 55 days after the regular diet resumed.

　　Based on animal fur found in the scat, the researchers discovered that the hyenas hunt more during Lent, when meaty leftovers from human meals are scarcer. Which is bad news for donkeys.

　　Before Lent, about 15 percent of hair in hyena scat samples came from hunted donkeys. During Lent, the number more than doubled. And donkey meals decreased again after the end of Lent. That’s when the people resume eating meat and the hyenas go back to scavenging free lunches—giving the hyenas the last laugh, while the donkeys breathe a sigh of relief.

　　中文翻译请点击下一页

本文关键字: 托福听力 科学美国人

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