It is rather that we still do not know how many species there are in the world today.
A. misleading
B. embarrassing
C. boring
D. demanding
网友回答
A. misleading
(答案→)B. embarrassing
C. boring
D. demanding
解析：考查形容词：A.misleading误导的B．embarrassing令人尴尬的C . boring乏味的D．demanding苛刻的，要求高的，句意：我们还不知道现在地球上有多少物种真是令人尴尬的。选B。