Based on what I heard, some people got really _____ by our music, and some people liked it a lot.

A．annoying

B．annoyed

C．to be annoying

D．being annoyed

如图所示，当开关S闭合后，滑动变阻器滑片向右移动，电磁铁磁性将         (选填“增强”或“减弱”)，在图中标出电磁铁的N、S极。