9. The topography of the Ozark Mountains, having been shaped by the dissolution of limestone and other types of soluble rock, feature hundreds of geological wonders.

　　(A) rock, feature

　　(B) rock, and featured

　　(C) rock, featuring

　　(D) rock, features

　　(E) rock to feature

　　答案：D

　　类型：句子结构

　　解析：句子主语是The topography of the Ozark Mountains。having been…是状语成分。主语是三人称单数，所以谓语动词不能用feature。B中and featured错误。C中featuring不能做谓语动词。D正确。E中to feature也不能做谓语动词。

　　10. In the early twentieth century, Modernist novelists such as James Joyce and Virginia Woolf experimented with literary form and narrative technique more than preceding centuries did.

　　(A) more than preceding centuries did

　　(B) more than writers of preceding centuries did

　　(C) more than that in preceding centuries

　　(D) to a greater extent than preceding centuries

　　(E) to an extent greater than novels of preceding centuries

　　答案：B

　　类型：比较

　　解析：句子是拿Modernist novelists和其他作家比较，than之后的名词必然是与novelists能够对应的，那么符合要求的只有B选项。其他选项比较内容都错误了。