—What do you think of the music teacher ?
— she is an attractive lady, she can be extremely difficult to work with．
A. If
B. As
C. Because
D. While
网友回答
A. If
B. As
C. Because
(答案→)D. While
解析：考查连词，根据句意可知，该句主从句内容相反，所以选择WHILE意为然而，虽然，表对比
句意为虽然她是一个吸引人的女士，但是她可能太难合作了。