股骨下1/3骨折可出现（）。
A．肱动脉损伤
B．胴动脉损伤
C．尺神经损伤
D．坐骨神经损伤
E．股骨头缺血性坏死
参考答案：B
简释《素问•至真要大论》中“诸暴强直，皆属于风”的机理。
Jenny ________ have kept her word. I wonder why she changed her mind.
A．must
B．should
C．need
D．would
