56.　　 The________________航海 from England to India used to take six months. It must have been very boring on a ship for that long.

55.　　 With respect to the Present’s view on the matter, nothing has yet been______________发表 in the press.

54.　　 A civil _____________仆人is someone employed in the civil service to work for the government.

53.　　 As we know, the earth is______________________-划分 into twenty-four time zones, one hour separate.

52.　　 He had learned_____________高等mathematics by himself by the time he was fourteen.

51.　　 It was through_______________贸易 and cultural links that European culture and techniques were brought to Britain.

50.　　 All the nuclear__________________(武器) should be get ride of .

49.　　 How early man constructed Stonehenge without use of mordent__________________(技术) is a mystery.

48.　　 A lot of valuable things including some________________(珍贵的) stones were unearthed in that grave.

47.　　 Have you ever sworn to heaven that you will love her______________(.永远)