VOA慢速英语2014.10.24
[audio]http://sound.yywz123.com/tingbbs/voa/voa20141024.mp3[/audio]A debate has continued for years in the United States about sports-related brain injuries, or concussions. Conflicting studies add fuel to arguments on both sides. 在美国,一项关于运动队大脑伤害或者脑震荡的争论已经持续几年了.互相矛盾的研究为双方的论点提供了证据. _________________________________________
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