请教大全3-7，3-8

盈盈绿茶

7.                 Many investors base their choice between bonds and stocks on comparing bond yields to the dividends available on common stocks.fficeffice" />

(A) between bonds and stocks on comparing bond yields to

(B) among bonds and stocks on comparisons of bond yields to

(C) between bonds and stocks on comparisons of bond yields with

(D) among bonds and stocks on comparing bond yields and（C）

(E) between bonds and stocks on comparing bond yields with

    

绿茶感觉答案E正确，请领教。谢谢。

    

8.                 Some of the tenth-century stave churches of Norway are still standing, demonstrating that with sound design and maintenance, wooden buildings can last indefinitely.

(A) standing, demonstrating that with sound design and maintenance, wooden buildings can last indefinitely

(B) standing, demonstrating how wooden buildings, when they have sound design and maintenance, can last indefinitely

(C) standing; they demonstrate if a wooden building has sound design and maintenance it can last indefinitely

(D) standing, and they demonstrate wooden buildings can last indefinitely when there is sound design and maintenance（A）

(E) standing, and they demonstrate how a wooden building can last indefinitely when it has sound design and maintenance

    

demonstrating that with sound design and maintenance, wooden buildings can last indefinitely

在该问题中，充当什莫成分？

jnlvo

7. comparisons 强调结果，comparing强调动作

jnlvo

现在分词作状语，补充修饰前面整个句子。

盈盈绿茶

谢谢。