5.足底內側縱弓(medial longitudinal arch)的拱心石(keystone)為:
(A)距骨(talus)
(B)跟骨(calcaneus)
(C)舟狀骨(navicular)
(D)骰骨(cuboid)
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統計: A(388), B(31), C(221), D(21), E(0) #616046
統計: A(388), B(31), C(221), D(21), E(0) #616046
