When Congress reconvenes, some newly elected members from rural states will try and establish tighter restrictions for the amount of grain farmers are to be allowed to grow and to encourage more aggressive sales of United States farm products overseas.
(A)and establish tighter restrictions for the amount of grain farmers are to be allowed to grow and to encourage
(B)and establish tighter restrictions on the amount of grain able to be grown by farmers and encouraging
(C)establishing tighter restrictions for the amount of grain farmers are allowed to grow and to encourage
(D)to establish tighter restrictions on the amount of grain capable of being grown by farmers and encouraging
(E)to establish tighter restrictions on the amount of grain farmers will be allowed to grow and to encourage
题目分析：有的选项以and开头，有的用doing有的用to do，划线外是try还没说要尝试什么呢，不用能and，establish是尝试干的事情，无法和前面的try进行并列，到底用doing还是to do得看意思，如果这个动作和try是同时发出的就用doing，如果这个动词和try发出有先后关系，就用to do，比如停止做某事就应该用stop doing，因为停止做某事这个意思中，你要想stop你必须做着某事，所以是doing，但是停下来去做某事必须是你先停下来再去做，所以用to do，这句话表达的意思是尝试干某事，还没有去干，应该用to do。D中前面用to establish但是后面用encouraging无法形成and体现的并列关系，干掉。E前后都用to do形成了并列关系，留着。
