第2鳃裂囊肿及瘘管囊肿多位于()。
A.胸锁乳突肌前缘中1/3
B.胸锁乳突肌前缘下1/3
C.颈前正中线
D.胸锁乳突肌前缘上1/3
E.颈后三角区
参考答案:B
一个圆锥的底面半径是4cm,高是9cm,体积是______立方厘米.
After the adjustment of financial policies, many netizens put up posts,90 percent carried the message of approval.
A.of which
B.of whom
C.of them
D.of what