求教几题语法知识点～

1.        Camus broke with Sartre in a bitter dispute over the nature of Stalinism.

(A) in a bitter dispute over

(B) over bitterly disputing

(C) after there was a bitter dispute over

(D) after having bitterly disputed about（A）

(E) over a bitter dispute about

求教这题是什么语法点？

1.        Balding is much more common among White males than males of other races.

(A) than

(B) than among

(C) than is so of

(D) compared to（B）

(E) in comparison with

问题2：比较级里前面出现among 后面都要出现么？一定的么？

1.        At the time of the Mexican agrarian revolution, the most radical faction, that of Zapata and his followers, proposed a return to communal ownership of land, to what had been a pre-Columbian form of ownership respected by the Spaniards.

(A) land, to what had been a pre-Columbian form of ownership respected by the Spaniards

(B) land, a form of ownership of the pre-Columbians and respected by the Spaniards

(C) land, respected by the Spaniards and a pre-Columbian form of ownership

(D) land in which a pre-Columbian form of ownership was respected by the Spaniards（A）

(E) land that had been a pre-Columbian form of ownership respected by the Spaniards

这题是什么语法点？

万分感谢～

了解了～ 谢谢