(·河北普通高中高三质量监测) I couldn't fully understand what he wanted to show in his paintings I

问题补充：

(·河北普通高中高三质量监测) I couldn fully understand what he wanted to show in his paintings, I thought his works were quite impressive.

A. As

B. Since

C. If

D. While

答案：

A. As

B. Since

C. If

(答案→)D. While

解析：D考查状语从句。句意：尽管我不能充分理解在他的画里他想要展现什么，但我觉得他的作品给人的印象很深刻。While在此处表示“尽管”，引导让步状语从句。