通过热键（）或菜单可以进入到发售普快到底通票界面。
A.Alt+K
B.F5
C.Alt+P
D.Alt+S
参考答案：A
The shoes are made ______ Guangzhou . They are made ______ leather.[ ]
A. of, in
B. in , from
C. from, of
D. in, of
股骨头骨软骨病（Legg-Calve-Perthes病）的治疗原则为①（）；②（）；③（）；④（）
