Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.


suggest that at least a portion of the area was remaining

suggest at least a portion of the area remaining

suggests that at least a portion of the area remained

suggests at least a portion of the area that had remained

suggests at least a portion of the area to have remained

加入错题本 分享
纠错
考题讲解
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
求讲解

登录 或 注册 后可以参加讨论

查看全部2条讨论
Prep2007E2-SC