No matter how frequently ____, the works of Beethoven still attract people all over the world. [ ]

A. performed

B. performing

C. to be performed

D. being performed

漫画“瞒矿难掉乌纱”说明了政府及其公职人员

①要坚持求真务实的工作做风 ②要依法有效的行使手中权力 ③要保持立党为公、执政为民的政治本色 ④要克服官僚主义和不正之风

A．①②③

B．①②④

C．①③④

D．②③④