体型匀称是反映（）
A.体重与身高的比值
B.坐高与身高的关系
C.体重与身高的关系
D.上部量与下部量的关系
E.上肢与下肢的关系
参考答案：C
They _____ at six o'clock in the evening. [ ]
A. do homeworks
B. do their homework
C. does his homework
D. do their homeworks
胶球系统的恢复措施及注意事项？
