[求助]大全43，即补充196,as后面的省略问题

43.        According to Booker T. Whatley’s recent analysis, planting the same crops as are planted on large farms will lead to economic disaster for the small farmer, who should plan a succession of high-value crops that will provide a year-round cash flow.

(A) planting the same crops as are planted on large farms will lead to economic disaster for the small farmer, who

(B) it will lead to economic disaster for the small farmer to plant the same crops as on the large farms; they

(C) economic disaster will result from planting the same crops as large farms to the small farmer, who

(D) economic disaster for the small farmer will result from planting the same crops as on the large farms; they（A）

(E) the small farmer planting the same crops as are planted on large farms will lead to economic disaster; they

在答案A里面， same crops被用来和 are planted on large farms 比较，请问 are planted on large farms 前面是不是省略了 those; 如果是的话，这种比较该如何总结呢？谢谢

谢谢大家，希望大家能帮助我解答

前面是省略了those

第二个问题不大好回答,呵呵,不知道楼主具体想知道什么

我就是想问，如果those被省略了，那么是在什么样的情况下可以省略呢？

这里是用句子的宾语做得比较，是不是说用as比较宾语的时候，as后面句子的宾语可以直接省略呢？

谢谢版主的帮助

有谁能解释下D为什么不对？