肩关节由关节盂和肱骨头组成,由于头大盂小,使之具有很大灵活性。
参考答案:对
When we finally ______ to get home after the tiring long journey, we could hardly move a step further. [ ]
A. tried
B. succeeded
C. managed
D. attempted
下图为福建莆田市木兰陂水利工程,它的修建不仅抵御了海潮,同时灌溉了大片农田。这一成就的取得与王安石变法中哪一措施相关
A.青苗法
B.方田均税法
C.农田水利法
D.募役法