大全-192 （885--SEC 21--5 ） 求助， rival for

192.（885--SEC 21--5  ）        By the mid-seventeenth century, Amsterdam had built a new town hall so large that only St. Peter’s in Rome, the Escorial in Spain, and the Palazza Ducale in Venice could rival it for scale or magnificence.

(A) could rival it for

(B) were the rivals of it in their

(C) were its rival as to

(D) could be its rivals in their（A）

(E) were rivaling its

答案A，  但 rival 的用法不清楚，    CD 上有一个讨论， 没有结果。

为什么 是 rival ... for 

Longman 关于rival的名词和动词形式，都有例句：

1. n.  Bo and I were rivals for the job.

2.v. Ships can't rival aircraft for speed. 

作动词的例句应该是很好的解释这道题的答案，个人感觉。