小儿喉腔最狭窄的部位是()。
A.环状软骨水平
B.声门裂
C.前庭裂
D.喉前庭
E.喉中间腔
参考答案:A
— I don't have any homework today.
— I don't ___________.[ ]
A. neither
B. either
C. yet
D. no
固话呼转A号码上,A号码再转到B号上,最多可以转接几次?()
A、3
B、4
C、5
D、6