46．A．hours                            B．days                       C．weeks                     D．minutes

A

    There were 12 bronze（青铜）animal heads at the European style（风格）  in Old Summer Palace （Yuanmingyuan）-Rat，Ox，Tiger, Rabbit，Dragon，Snake，Horse，Sheep，Monkey, Rooster, Dog，and Pig．They were made into fountain（喷泉）and would take turns spouting water every two hours to tell time．

45．A．gave up                  B．looked up               C．woke up                 D．stayed up