og-11th --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.

Agreement + Idiom

Two verbs collide in the underlined section,

•                      and both have agreement errors. Spins should be plural to agree with its subject the Earth and the other solid planets; were determined should be singular to agree with its subject the direction. The idiom
            determined by is used to express cause;
            determined from is incorrect in this context.

A Spins should be spin; were should he was; from should be by

B Spins should be spin; were should be was; because of should be by

C Spins should be spin; through should be by

D Correct. In this sentence, spin agrees with

the plural subject the Earth and the other solid

planets; was determined agrees with its subject

the direction; the idiom determined by is used

to express cause.

E The wordy as a result of is not the correct idiom

The correct answer is D.

对红色字体一直看不明白，既然spinV 的主语是复数，解释也说须是复数才能跟它的主语一致，正确选项里明明用的单数啊。

题目贴的很不工整，我直接从0G-11 WORD版里直接COPY过来，就这个样子了而且没法改。

明白这道题目的NNS指点我一下，没找到关于这道题目的讨论