50．A．Chinese                                                  B．Peking Opera

C．China                                                       D．Peking Olympics

A

49．A．tell                      B．say                      C．talk                       D．speak

48．A．traditional            B．professional           C．serious                   D．difficult

47．A．can                     B．must                    C．should                   D．need

46．A．think of               B．think about          C．think                   D．think up