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标题: [求助] Prep 1-95 [打印本页]

作者: annseeway 时间: 2009-1-2 10:39
标题: [求助] Prep 1-95

Prep1-95：

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

(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

我还是很怀疑这个 and so 的用法，之前大家说这里so是副词，但是如果so是副词就没有“所以”这层意思了，也就是没有表达出前一句和后一句的因果关系啊？
请NN指正！我非常之疑惑！

作者: hanheli 时间: 2009-1-2 11:13

and so 和 and是一样的。一般来说and会比and so好，但是一上来就可以确定只有DE 正确，d中的thus又是明显不对的~

作者: AlienX 时间: 2009-1-2 14:33
and thus=and so

作者: JohnnyZhu 时间: 2009-1-2 15:47

thus是副词，如果用thus，restricted to离要修饰的frog太远了。外加，前面两位的Input，and so=and

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