（）缺陷属于铸件中的缺陷。
A.冷隔
B.折叠
C.未熔合
D.咬边
参考答案：A
They were kept waiting in the snow for a couple of hours,________．
A．cold and hungry
B．coldly and hungry
C．cold and hungrily
D．coldly and hungrily
稳定性椎体压缩骨折的椎体压缩程度一般不超过（）
A.1/5
B.1/4
C.1/3
D.1/2
E.2/3
