磁盘属于那种设备（）。
A.字符设备
B.块设备
C.网络设备
D.终端设备
参考答案：B
He spends as much time as he can ______ English every day. [ ]
A. to practise speaking
B. to practise to speak
C. practise to speak
D. practising speaking
城市公共交通按规划期限划分为哪三个层次？
