It is not who is right but what is right ________ is of importance.
A.whichB.itC.thatD.this在线课程C
剖析：句意：谁对谁错不重要，重要的是什么是对的。本题考查了对强调句型的掌握，而本题的被强调部分用了“not...but...”结构，增加了试题的难度。