单项选择题
A. has regained their popularity since 1913 B. were mostly destroyed by the Civil War C. more often than not lost than gained money D. had been popular before movies came in
A.odd B.good C.fair D.rare
A. no authorities have ever made a comment B. no one has ever tried to give them a definition C. no effective ways have been taken to apply them D. no consistent yardstick has ever been used