—_____ do you go to bed?
—At 10:00 [ ]
A. What time
B. What
C. Why
D. Who
答案:A
English is___ useful language in ___ world.
A. an, the
B. a, the
C. the, /
D. /,the
当站立支持面适宜,平衡干扰较小时,纠正站立平衡的对策是()
A.踝关节协同模式
B.髋关节协同模式
C.跨步对策
D.稳定极限
E.姿势协同