I hope you'd better ______in the street. [ ]

A. don't play football

B. not to play football

C. to not play football

D. not play football

在自己独处、无人监督的情况下，按照医学道德规范的要求行事，是指（）的医学道德修养方法

A.用敬

B.积善

C.慎独

D.反省