GRE Reading Comprehension: OG/PP2-GRE阅读OG/PP2 - 52EDNJF8BEY17X03P

The sentence "If serfs ... estate" has which of the following functions in the passage? A. It provides support for an argument presented in the preceding sentence. B. It provides evidence that helps undermine a view introduced in the first sentence. C. It raises a question that the succeeding sentence will resolve.