gre考试阅读真题解析(B)_GRE阅读

　　24. According to the passage, it has been recently discovered that

　　 there are detailed skeletal similarities in the flippers of pinnipeds

　　 sea lions, seals, and walruses are all pinnipeds

　　 pinnipeds are descended from animals that once lived on land

　　 animals without common ancestors sometimes evolve in similar ways

　　 animals that have flippers do not all use them in the same way

　　25. The author implies that which of the following was part of the long-standing view concerning pinnipeds?

　　 Pinnipeds are all descended from a terrestrial bearlike animal.

　　 Pinnipeds share a common ancestor with turtles, whales, and dugongs.

　　 Similarities among pinnipeds are due to their all having had to adapt to aquatic life.

　　 There are detailed similarities in the skeletal structure of the flippers in all pinnipeds.

　　 Convergent evolution cannot account for the similarities among pinnipeds.

　　26. The author implies which of the following about the fact that turtles, whales, and dugongs all have flippers?

　　 It can be explained by the hypothesis that turtles, whales, and dugongs are very closely related.

　　 It can be explained by the idea of convergent evolution.

【gre考试阅读真题解析(B)】相关文章：

1 2 3 4 567 显示全文

上一篇：gre考试阅读真题解析(A) 下一篇：gre考试阅读真题解析(A)

GRE阅读 最新: GRE阅读陌生词汇的技巧
2016-03-01; GRE阅读题选项的原则
2016-03-01; 新GRE阅读经典句式盘点
2016-03-01; GRE阅读翻译练习
2016-03-01; GRE阅读主旨题解题技巧
2016-03-01; GRE阅读高分技巧
2016-03-01

网友关注: GRE写作提纲举例指导（31）; GRE Issue写作的方法; 17个GRE写作经典句！; GRE写作提纲举例指导（33）; 9周搞定GRE写作，你信吗？; 新GRE写作范文之谈“成功”; 4条GRE作文作弊标准; 这五大类GRE写作素材让你得高分; GRE写作提纲举例指导（32）; GRE作文中锦上添花的例句