59. If children were not told and shown how to __________ politely, they might grow up rough and rude like savages (野人).

　 A. blame　　　 B. behave　　　　 C. betray　　　　 D. bow

58. Many people ask the government to make laws to _________ smoking in public places.

　 A. ban　　　　　　 B. benefit 　　　　　　 　C. limit 　　　　　　　　　 　D. permit

57. Letterboxes are much more _________ in the UK than in the US, where most people have a mailbox instead. (06浙江)

　 A. common　　　 　 B. normal　 　 　　C. ordinary 　　　　D. bare

56. I don’t like winter, because I hate to wear _________ clothes.

　　 A. casual　　　 B. comfortable　　 C. changeable　　　 D. clumsy

55. It’s believed that the two accidents are ________ related to each other.

　　 A. closely　 　 　　B. close　 　　　　　　 C. commonly　 　　　　　 　D. deeply

54. With the development of West China, many technicians are _________ needed there in recent years.

　 A. cautiously　　 　B. casually 　　　　C. badly　　 　　　D. barely

53. The weather here is too _______ and it can rain at any moment. Why not bring an umbrella?

　 　A. comfortable　 　B. consistent 　　　C. changeable　　 D. bitter　

52. The job is __________ to me because I have little experience. However, it is also rewarding.

A. challenging　　 B. boring 　　　　C. bitter　 　　　　D. contradictory

51. Wait till you are more ________. It's better to be sure than sorry.

A. cautious　　　 　B. confident　　 　C. calm　　　　 　　D. certain

50. They are 　　____ investors who always make thorough investigations (调查) both on local and international markets before making an investment.

A. common 　　　B. complex　　 　C. cautious　　　　　 D. confident