如果等式x2+3x+2=(x﹣1)2+B(x﹣1)+C恒成立,则B=( ),C=( )
5,6
They were very thirsty, ______ they had some watermelons.[ ]
A. so
B. because
C. but
在膝关节平片上不能显示的是
A.髁间隆起
B.关节间隙
C.籽骨
D.骨骺
E.半月板