OG12-SC-43一直以来的疑惑~

LZ我想补充一下 E选其实是最对称的 完整的句子是： Laos has a land area  comparable to that of Great Britain but （Laos has）a population of only four million people。因为平行，所以相同的成分，也就是括号里的成分就被省略了。我记得逗号+but的用法与逗号+and的用法一致，就是加了逗号后，but或者and之后的句子需要是完整的有主谓的句子（主语可以为代词），比如..., but Laos has...，如果but/and后没有主语，句子就成了run-on sentence的一种。如果前后主语一致而不想重复主语，且用but/and 连接前后句子，but/and前不能有逗号，就像1楼举的例子，he wanted nothing but (he wanted) to stay here。这是我通过OG总结的，不是语法定理什么的。选择性的看吧。

43.  Laos has a land area about the same as Great Britain
but only four million in population, where many are
members of hill tribes ensconced in the virtually
inaccessible mountain valleys of the north.
(A)  about the same as Great Britain but only four
million in population, where many
(B)  of about the same size as Great Britain is, but in
Laos there is a population of only four million,
and many
(C)  that is about the same size as Great Britain’s
land area, but in Laos with a population of only
four million people, many of them
(D)  comparable to the size of Great Britain, but only
four million in population, and many
(E)  comparable to that of Great Britain but a
population of only four million people, many of
whom

最后正确选E

疑问:   如果是but连接两个并列成分，形式还用严格对称么？but时而对称，时而没对称，很难搞啊~

谢谢众神了~

同问，不理解OG上说的C中them的指代有问题。them不就是指代people中么？如果C有问题，E不也有问题么？

望高人解答，谢谢