成人腰椎结核X线片常见
A．椎体破坏有死骨
B．腰椎生理前突消失
C．椎间隙不窄
D．腰大肌阴影增宽
参考答案：A,B,D
In the corner of the room, we found the little boy ________ on the ground with both hands ______ up with a rope.
A．lying; tying
B．lying; tied
C．laying; tired
D．laid; tying
绿色壁垒属于（）
A．关税壁垒
B．非关税壁垒
C．鼓励出口
D．出口管制措施
