环状软骨相当于
A.6颈椎平面
B.4颈椎平面
C.7颈椎平面
D.5颈椎平面
E.8颈椎平面
参考答案:A
I could hear the rain ____ against the windows.
A.striking
B.defeating
C.beating
D.hitting
如何测量横墙温度?