[求助]补充187, 190,195

tina_aya

187. 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

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

请问为什么a不能选要选b是因为based on 和on the basis的用法吗,可以解释一下吗

190. Those with a cynical turn of mind might speculate if the new corporation, eager for profit, might not have started the rumor that caused its competitor to declare bankruptcy.

(A) speculate if the new corporation, eager for profit, might not have started

(B) speculate if the new corporation, eager for profit, had not started

(C) speculate if, in its eagerness for profit, the new corporation started

(D) wonder as to whether, in its eagerness for profit, the new corporation did not start（E）

(E) wonder whether the new corporation, eager for profit, had started

答案是e为什么不能选b

195. The American Medical Association has argued that the rapidly rising costs associated with malpractice litigation are driving doctors from the profession and that reform of the tort system is imperative for bringing malpractice insurance premiums under control.

(A) that reform of the tort system is imperative for bringing malpractice insurance premiums

(B) that reform of the tort system is imperative if malpractice insurance premiums are to be brought

(C) that reform of the tort system is imperative to bring malpractice insurance premiums

(D) reform of the tort system is necessary in bringing malpractice insurance premiums（C）

(E) the tort system needs to be reformed so that malpractice insurance premiums are brought

这题答案是c我选对的,可是我想问a和c的差别,是因为有惯用语吗,还是指是因为句意上的问题,谢谢

scots

187,按白某人的解释是，能用动词的，就不要用该动词的名词和形容词形式表达。。

190，GMAT考试里if只能做“如果”解释，而不能象"whether"一样做“是否”解释

195，表“目的”用to do比较合适，for+sb./sth.表示“为了什么人或者事”，for being表目的动作不太合适。。

偶快成XDF的传教士了。。汗~~~~~~~~

tina_aya

thanks

vaporization200

“190，GMAT考试里if只能做“如果”解释，而不能象"whether"一样做“是否”解释”

其实不是如此,speculate和wonder都应该接名词

应该想想 if子句和whether 子具有什么不同

想出来了吗?

If 子句是副词子句,而whether是名词子句阿

tina_aya

oh yes, i understand

thanks a lot