-It's time ________. Good night.

-Good night. [ ]

A. to get up                    

B. to go to bed

C. get up                      

D. go to bed

借肌腱与骨骼连接，受躯体神经的支配，并且迅速地收缩完成各种复杂动作的属于（）

A.滑肌

B.横纹肌

C.骨骼肌

D.心肌