Although the vast constellation of small islands that dot the South Pacific has a population of only a few million people, it is home to about a sixth of the world's 6,000 or so languages.
Pacific has a population of only a few million people, it is
Pacific has a population of only a few million people, they are
Pacific is populated by a only a few million people, and it is
Pacific, having a population of only a few million people, is nonetheless
Pacific, populated by only a few million people, yet they are
C选项 although 和and重复了
我倒觉得出现了平行连接词and,就应该看看平行对象前后是否平行,and前是主句,后是从句,显然不行
因为although开始的让步状语未划线不能变所以两个句子间已经有了连词,看到and就不对了。其实差不多的意思。
登录 或 注册 后可以参加讨论