一组数据2,3,5,9,6的极差是( )。
7
“通因通用”适用于治疗的病证是()。
A.实证
B.虚证
C.虚实错杂证
D.真虚假实证
E.真实假虚证
Time is money! We should()our time.
A.be fit for
B.make good use of
C.play a part of
D.take the place of