属于骨的直接连结的是()
A.骨结合
B.关节面
C.关节囊
D.关节腔
E.滑膜襞
参考答案:A
已知f(x)是可导的函数,且f′(x)<f(x)对于x∈R恒成立,则( )
A.f(1)<ef(0),f(2013)>e2013f(0)
B.f(1)>ef(0),f(2013)>e2013f(0)
C.f(1)>ef(0),f(2013)<e2013f(0)
D.f(1)<ef(0),f(2013)<e2013f(0)
— Did you return Fred's call?
— I didn't need to, ______ I'll see him tomorrow. [ ]
A. though
B. when
C. unless
D. because