求助GMAT Prep两道题的答案，过两天就考了。。。

都来自于CD上NN整理的Prep语法笔记，只是这几题没有答案。。。

A. their horny jaws function for teeth

B. its horny jaws function for teeth

C. its horny jaws function as do teeth

D the horny jaws function as teeth do

E the horny jaws function as teeth

这个是选E吗？

10.  The yield per acre of coffee berries varies enormously in that a single tree, depending on both its size and on climate and altitude, could produce enough berries to make between one and twelve pounds of dried beans a year.

A.       enormously in that a single tree, depending on both its size and on climate and altitude, could produce

B.       enormously in that a single tree, dependent on its size and also on climate and altitude, is able to produce

C.       enormously, because a single tree, depending on its size and on climate and altitude, is able to produce

D.      enormously, because a single tree, being dependent on its size, climate, and altitude, is capable of producing

E.       enormously, because a single tree, dependent both on its size as well as on climate and altitude, could produce

这个是选C吗？

哪位有答案链接呵，告诉偶一声，十分感谢~~~

4. Although the turtle has been toothless for more than 150 million years, in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws function for teeth.

A. their horny jaws function for teeth

B. its horny jaws function for teeth

C. its horny jaws function as do teeth

D the horny jaws function as teeth do

E the horny jaws function as teeth

A: function as n. 固定用法

B: its 指代错

C: 同上

D: function as n. 固定用法，这里不是as引导句子做比较

E: correct

注意：function as … 和 A do as B do 的逻辑意思区别

A. enormously in that a single tree, depending on both its size and on climate and altitude, could produce

B. enormously in that a single tree, dependent on its size and also on climate and altitude, is able to produce

C. enormously, because a single tree, depending on its size and on climate and altitude, is able to produce

A: in that不如because 简洁, on both … and on …不平行

B: 同上, dependent一般用作表语结构，不如depending分词合适

C: correct

D:

E:

注意：

1、注意未划线结构表示从1到12磅用了between one and twelve而不是from one to twelve，虽然两种表达都对

我没找到这个语法笔记， 能告知那里下载吗？非常感谢！ 我也快考了

请问这个的逻辑意思有什么区别呢？