求助：新东方小蓝语法题

周二牛

这两道题是新东方小蓝section four 中的，请大家帮我看看呗，万分感谢！！
1、Rather than continue to produce most of the items necessary for subsistence, a growing number of farm families during the first decades of the nineteenth century began to specialize in the production of grain or cotton and to use the cash proceeds from selling their crops for buying necessities.

(A) selling their crops for buying
(B) the sales of their crops for buying
(C) their selling of crops so as to buy
(D) their selling crops for buying of
(E) the sales of their crops to buy

这道题答案给了E，但是我选的是A, 请问这道题是怎么思考的，它的考点是什么呢？
2、Although all the proceedings of the Corniness party conference held in Moscow were not carried live, Soviet audiences have been a great deal of coverage.
(A) all the proceedings of the Corniness party conference held in Moscow were not carried live
(B) all the Corniness party conference's Moscow proceedings were not carried live
(C) all the Corniness party conference Moscow proceedings have not been carried alive
(D) not all the Corniness party conference Moscow proceedings have been carried alive
(E) not all the proceedings of the Corniness party conference held in Moscow were carried live

这道题选的是E，我选的是A，我想知道A和E有什么区别呢，我觉得他们表达的意思是一致的吧，关于这种不完全否定的有什么语法规则吗？

非常感谢大家哦~~

PS: 请问小蓝的题目是出自哪里的呢？

nemiah

1， use sth to do sth.  proceeds 意思是收益
2，我觉得A的用法没有的。如果要表示全部否定应该说 None of ... were ... 请NN指正。。

yarndyed

1. sell.... for ....不好，用TO比较好，表目的