这道题的解释我不太满意,不知道是不是我考虑不全!

bessette

E7-10

(Based on the growth rates of large modern reptiles such as) the Galapagos tortoise and examination of fossiles of juvenile dinosaurs,scientists estimate that the larger dinosaurs probably lived tobe between 100 and 200 years old.

(A) Based on the growth rates of large modern reptiles such as
(B) On the basis of growth rates of large modern reptiles such as
(C) Based on the growth rates of large modern reptiles like
(D) On the basis of growth rates of large modern reptiles, like those of
(E) Based on such growth rates as those of large modern reptiles like

我觉得A和B都没错,但从concise的角度,A比B好,但答案是B, 说什么"scientists 作based on 的逻辑主语不妥", 好像让人不服!
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tongxun

based on 中用的是过去分词表被动。这是不符合逻辑语义。

jeannette

You can say "the study is based on ...", but you can not say "somebody is based on ...".

bessette

谢谢jeannette和tongxun,

光从原句很难看出不合逻辑的地方,但如果用jeannette的方法,好像问题就出现了,改正了我一直没发觉的错误,再次感谢! 代入法是个好办法,我有好几次都忽略了它.