95.(29661-!-item-!-188;#058&003962)
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
正确答案为E
Q1：D选项中的疑问：
prep语法笔记写道：用过去分词（指restricted）作伴随状语逻辑意思错误，这两个动作不同时发生，而是存在因果关系。
对于这个解释我不太明白，D中的thus不是就表达出了因果关系？
Q2：D选项中的另一个疑问：
“，done”结构中的done修饰句子中的主语还是宾语？还是需要根据意思具体问题具体分析（就如同 “A of B, which” 中which修饰谁一样）？
希望大牛不嫌弃我的问题，能够给予解答，谢谢！
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发表于 2012-11-20 19:08:33
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