属于双轴关节的是（）
A.平面关节
B.车轴关节
C.椭圆关节
D.鞍状关节
E.球窝关节
参考答案：D
— How ___________ your brother go to school?
— On foot. [ ]
A. are
B. is
C. does
D. do
He thinks himself somebody, but we think him ______.
A．nobody
B．anybody
C．somebody
D．everybody
