V. vocabulary(10) 51. Why he went there is a _________（谜）to me 52. The football match will be held in the Peking Workers’ ________ （体育场） 53. He received a letter saying that his _____________（申请）had been rejected. 54. I remembered the beatings and the ____ （残酷）of the guards when I was in prison. 55. what should be done is to be done ____（适当） 56. Amber has a beautiful yellow-brown colou and it easily melts when ____(加热). 57. The room ____（充当） as a small reception hall for all the applicants. 58.. He has a gift for _______(计算) and likes to solve any mathematical  problem. 59  _____（个人观点）, I think  good altitude  means  commitment , professionalism, teamwork spirit and strong will.. 60. Economic crisis has _____ （影响）its tourism, which is the major industry in this country.