大全 161 & 305

161.       Based on the growth rates of large modern reptiles such as the Galapagos tortoise and examinations of fossils of juvenile dinosaurs, scientists estimate that the largest dinosaurs probably lived to be 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（B）

(E) Based on such growth rates as those of large modern reptiles like

Why is E wrong?

305. For many travelers, charter vacations often turn out to cost considerably more than they originally seemed.

161－句首出现分词结构找对应的主句主语，scientists只能‘依靠XX’而不能‘被XX依靠’，排除A/C/E；此外，E的错误还有：such as后只能跟名词短语；举例不能用like；those没有合适的指代。

305－这道题好像有个关于习惯的说法，可以查查以前的帖子。我个人认为A是强调时态的差异，而且B的to后省动词使句子不完整。