#07年考研英语考前冲刺系列讲座2（三） 搜索结果
Text3Whenprehistoricmanarrivedinnewpartsoftheworld,somethingstronghappenedtothelargeanimals;theysuddenlybecameextinct.Smallerspeciessurvived,thelarge,slow-growinganimalswereeasygame,andwerequicklyhunted
