喉咽的位置
参考答案:
位于会厌上缘至环状软骨下缘平面之间向下与食管相续,向前经喉口与喉腔相通
描绘塑造形体的最基本的元素是(),线,面。
We had hoped that you would be able to visit us, but you .
A.didn’t
B.hadn’t
C.wouldn’t
D.would not have