1. 頭部顱底骨(cranial base bone)之骨化過程為下列何者？ (A)二級軟骨骨化(secondary cartilage ossification) (B)膜內骨化(intramembranous ossification) (C)軟骨內骨化(endochondral ossification) (D)膜內骨化(intramembranous ossification)及軟骨內骨化(endochondral ossification)兩種