图中红色箭头所示为肘关节（）
A.外展
B.内收
C.屈曲
D.过伸
E.外旋
参考答案：C
Jack described his father, who____a brave boy many years ago, as a strong-willed man. [ ]
A. would be
B. would have been
C. must be
D. must have been
既适用本国优先权，又适用外国优先权并适用6个月申请期限的知识产权客体是( )。
A．发明专利B．商标C．外观设计专利D．实用新型专利
