because 在同一句子中可不可以出現(xiàn)兩次?
GMAT句子改錯(cuò)題有其中的一道
In recent years cattle breeders have increasingly used crossbreeding, IN PART THAT THEIR STEERS SHOULD ACQUIRE CERTAIN CHARACTERISTICS and partly because crossbreeding is said to provide hybrid vigor.
a) is part that their steers should acquire certain characteristics
b) in part for the acquisition if certain characteristics in their steers
c) partly because of their steers acquiring certain characteristics
d) partly because certain characteristics should be acquired by their steers
d) partly to acquire certain characteristics in their steers
閣下的解題思路：
先把答案a,b刪掉,因?yàn)槭褂昧薸n that,語氣太強(qiáng)烈.答案c中的"because of " 使用錯(cuò)誤. 剩下來在d和e選.由于在劃線部分（大寫部分）后有一個(gè)"partly because" 以平行句子的思路答案d很自然成為理想答案.可是這題的答案是“e”.問題是不是出在如果選d,句子就會同時(shí)出現(xiàn)兩個(gè)because?
請問哪位高手可以指導(dǎo)一下?謝謝