下列哪项不属于脊柱前凸的病因()
A.晚期妊娠
B.大量腹水
C.腰椎压缩性骨折
D.水平骶椎
E.髋关节结核
参考答案:C
圆柱体的体积=底面积×高,用字母表示是______.
The whole family still live in the house, most of _____ windows face south.
A.the
B.whose
C.its
D.which