（）等为非自由体。
A.高速铁路上列车
B.数控机床工作台
C.砌筑在基础上的墙
D.用绳子悬挂的重物
E.火箭
参考答案：A, B, C, D
—Jack took the 8:30 bus to Guangzhou this morning.
—Really? He ______ 8:20 Express. It is much more comfortable and faster to travel by train.
A．could have taken
B．would have taken
C．need have taken
D．must have taken
根据资本充足率的状况，资本严重不足的商业银行，资本充足率不足百分之（），或核心资本充足率不足百分之（）
A.4；8
B.4；2
C.6；5
D.8；4
