—The current advice is to ________ smoking and work out.
A:cut away
B:cut out
C:cut through
D:cut up
根据图中已标明的磁极,画出A点磁感线的方向并在括号标出另一磁极的名称.
如图是人体消化、呼吸、泌尿、衙环系统生理活动示意图,请据图回答以下问题: