OG257(OG11-138)

138. The direction in which the Earth and the other solid planets-Mercury,Venus,and Mars-spins were determined from collisions with giant celestial bodies in the early history of the Solar System.

(A)spins were determined from

(B)spins were determined because of

(C)spins was determined through

(D)spin was determined by

(E)spin was determined as a result of

答案D无异议。但在OG11的解释中说：Two verbs collide in the underlined section(, and both have agreement errors).什么意思啊？那两个动词分别属于不同的部分，怎么collide了呢？在答案d中除了数的变化外也没有什么变化啊？困惑....

spins were determined from

就是spins和were两个动词都主谓不一致

谢谢斑竹回复。

不过两个动词都有主谓不一致的问题已经在后半部分（上面整句话都是OG说明给出的）明确指出来了呀，前半部分似乎是说这两个动词之间有什么冲突。

The direction(in which the Earth and the other solid planets spin) was determined by...

cheers

我明白句子意思和结构，只是对og的上述解释感到困惑......，两个动词之间有什么问题吗？$

determine by 和determine from 意思各是什么 ？og11没说from 用法是错的，只是说用在这里不行。那from 的意思是什么