运动中最容易发生痉挛的肌肉有哪几块（）
A.小腿腓肠肌
B.足屈拇肌
C.屈趾肌
D.股二头肌
参考答案：A, B, C
Once there was emperor whose name was Li Shimin. He was very great. [ ]
A. a
B. an
C. the
D. /
送风器的作用？
