prep07-95 and和so都是conj，应该是不可以一起使用的吧？【请教贴】

泡沫HX

顶xuzhuo8837863~

yiqing2012

看一天了怪累的，把颜色弄好玩点哈~
Unlike frogs that metamorphose from tadpoles into adults within a one-year period, it takes three to four years for the mountain yellow-legged frog of the Sierra Nevada to reach adulthood, and so they are restricted to deeper bodies of water that do not dry up in summer or freeze solid in winter.

(A) it takes three to four years for the mountain yellow-legged frog of the Sierra Nevada to reach adulthood, and so they are
(B) it takes the mountain yellow-legged frog of the Sierra Nevada three to four years until it reaches adulthood, and therefore it is
(C) in the Sierra Nevada, mountain yellow-legged tree frogs take three to four years to reach adulthood, thus being
(D) mountain yellow-legged frogs of the Sierra Nevada take three to four years until they reach
adulthood, thus
(E) mountain yellow-legged frogs of the Sierra Nevada take three to four years to reach adulthood,
and so they are
(E)正确,比较对象mountain yellow-legged frogs置于句首,比较更加有效,且符合比较双方数量对等原则; take some time to do符合习惯用法;使用and连接因果关系的句子符合逻辑意思

问题是，我记得我做过一道题，说and和so不可以连用的因为都是连词么~

-- by 会员 heyyolanda (2011/5/16 21:12:50)

谁说and so不能连用，就因为那道pp题么？？？那解释一定对么，别人对不对一定要靠自己客观思考就清楚了。
so 和 thus是一个意思，但为什么and thus 到处都在用呢？  既然and thus 可以，为什么and so就不连用呢。
实际上是，gmat语法中某道题固定的搭配正确了，在另一道题中可能会是错的。题目不同，答案肯定不同。不能生搬硬套，更不能可笑的怀疑答案有问题（虽然不否认极少极少极少极少数答案是有歧义）
这道题重点不在and so，而在划线的第一个动词restricted。 这题过程是一读下来只剩下最后两个。原文d是 ：一个句子，所以一个过去分词作为结果（restricted修饰前面的青蛙）E是：因为一个句子，所以一个句子。显然E比D好，做完了。
切记，不能生搬硬套，不然会遇到很多反例的，做对做错都是一个概率问题。希望能帮到你！

-- by 会员 xuzhuo8837863 (2012/9/22 11:00:20)

xuzhuo,sisi,请问你们对2#的那个问题的B，E有什么看法呢？在表示因果方面，and so和so
that之间的语义差别是什么？为什么那道题E中的so that会优于B中的and so?thks~