PREP 上几道题目 求教 急！

11号就要考了，今天做了GMATPREP，还是语法错的最多，而且，自己都不明白是什么考点，所以贴出来，请大家帮忙看一下，多谢了！

The computer company has announced that it will purchase the color-printing division of a rival company for $950 million, which is part of a deal that will make it the largest manufacturer in the office color-printing market.

A.      million, which is part of a deal that will make

B.      million, a part of a deal that makes

C.      million, part of a deal making

D.     million as a part of a deal to make

E.      million as part of a deal that will make

答案是E，不明白是什么考点，请大家帮忙！先谢过

时态:B排除了.

从句:A排除了.

C的错误在于part of a deal修饰了million,说million is part of a deal,明显不通顺.

D的错误:part of 和a part of的区别在于前者指了必不可少的一部分,后者只是一部分.