I hear that she is lovely she can be extremely difficult to deal with.
A. whether
B. as if
C. if
D. While
网友回答
A. whether
B. as if
C. if
(答案→)D. While
解析：句意：我听说尽管她很虎活泼可爱，但是可能非常难于相处。that引导一个宾语从句，宾语从句里又含有状语从句，从句意可知应是让步状语从句，此处 While=although引导让步状语从句。再如While he was respected,he was not liked.他虽然受到尊敬，但是没有受到喜爱。A. Whether是否B. as if好像C. if 只有D可以引导让步状语从句，故选D。
考点:考查状语从句的用法。