A:enabling
B:having enabled
C:to enable
D:to have enabled
知廉明耻,是做人最基本的道德规范。“盖不廉则无所不取,不耻则无所不为”,这句古语蕴含的哲理是( )
会聚光束经过一平面镜反射后( )
— Do you think so, too?