I have never learned about the western art and that makes ______ difficult for me to understand the

paintings of the Middle Ages.  [ ]

A. so  

B. much  

C. that

D. it

在认识论上“跟着感觉走”是( )

A．唯物主义思想的表现

B．机械唯物论的观点

C．不可知论思想的表现

D．否认理论对实践的指导作用