In the eyes of some people, Japan has been ____ the list of the unpleasant places for sightseeing in consequence of the severe nuclear leak.

A．put down

B．put on

C．put off

D．put up

稀悬浮液双段磁选直串式回收流程对那段滚筒的场强要求较高（）？

A、以上都不对

B、二段

C、一段

D、一段和二段