关于prep的几道不懂得题，请基础好的来解答一下

在问题目之前，首先问一句prep第一次做sc正确率7成，这样有可能上700？还有20天就考了？恳请解答~~，小弟比较愚笨，所以有不少问题，希望诸位高手帮忙解答的时候说明一下是哪个题，因为时间是在紧迫，身边没有考这个的，所以恳请大家助人为乐一下。小弟在此先谢过了

下面上题目：

1，

To meet the rapidly rising market demand for fish and seafood, suppliers are growing fish twice as fast as their natural growth rate, cutting their feed allotment by nearly half and raising them on special diets.

(D) they grow naturally, cutting their feed allotment

问题：为什么d比c好？这里they，them，应该值得是鱼吧~我觉得d逻辑不合理

Nikola Tesla, the inventor of alternating current, because he was excited with the prospects of harnessing Niagara Falls for producing electric power, he predicted in the mid-1890's that electricity generated at Niagara would one day power the streetcars of London and the streetlights of Paris.

C的逻辑才不合理

意思应该为 比他们自然生长快两倍，所以选D

The Achaemenid empire of Persia reached the Indus Valley in the fifth century B.C., bringing the Aramaic script with it, from which was derived both northern and southern Indian alphabets.

(A) the Aramaic script with it, from which was derived both northern and

(B) the Aramaic script with it, and from which deriving both the northern and the

(C) with it the Aramaic script, from which derive both the northern and the

(D) with it the Aramaic script, from which derives both northern and

(E) with it the Aramaic script, and deriving from it both the northern and

此题不知道怎么选

4，Even though sub-Saharan Africa often evokes images of drought and famine, researchers say that the area is the home of more than 2,000 grains, vegetables, roots, fruits, and other foods that have the possibility for feeding the continent, even other parts of the world.

(A) have the possibility for feeding the continent, even

(B) have the possibility of feeding the continent, even of

(C) could feed the continent, so even with

(D) could feed the continent and even

(E) could possibly feed the continent and, in addition, for even

这里答案会选，但有一个不明白，原文用have possibility,而选项中改用could，这样是否有改变原文之嫌？

D错了，如果你想把这两个词并列，应该是was excited and predicted，excited前面少了was，否则一个过去分词和一个谓语动词怎么能并列呢。

C