B. The frontier no longer existed. C. Earlier historians had drawn incorrect conclusions about the frontier. D. Settlement of the frontier should be encouraged. 你的答案: 正确答案:B 题目解析: 登录 后才能查看题目解析,还没有账号? 马上注册 托福14天冲刺微信战团 推荐文章: 【托福听力】Official...
Similarly, the extinction of the dinosaurs left areas of living space wide open, giving mammals their lucky break. This concept challenges the idea that intense competition for resources in overcrowded habitats is the major driving force of evolution. Professor Mike Benton, a co-author on the stud...
分享回复赞 刺客教条吧 刻羽 AC3成就列表泄露Monopoly Man - Send a convoy to Boston, New York and the Frontier.Head in the Cloud - Find all pivots and sync the Animus to the Cloud.Blowing in the Wind - Retrieve every page for one of Ben Franklin’s ... 分享35赞 国际文艺吧 舍今生 2016...