14. (A)they are not in style any more 　　(B)they have cost him far too much 　　(C)they no longer suit his eyesight 　　(D)they should be cleaned regularly

18. (A)The building of the dam needs a large budget 　　(B)the proposed site is near the residential area 　　(C)the local people fel insecure about the dam 　　(D)the dam poses a threat to the local environment 　　Question19 to21 are based on the conversation you have just heard