25. He left____ an important detail in his account. 
A. off               B. over          C. behind         D. out
答案：D 短语辨析。Left off停止。Leave over留下。Leave behind遗留。Leave out省去，不考虑。根据句意D项最合适。 

26. When there are small children around, it is necessary to put bottles of pills out of____. 
A. hand             B. hold          C. place           D. reach
答案：D 短语辨析。根据句意D项out of  reach 够不着，最适合本句。

27. I hadn’t seen him for years, but I_____ his voice on the telephone. 
A. realized          B. discovered     C. recognized       D. heard
答案：C 词义辨析。根据后面的宾语C和D都可以搭配，都是认识，辨认的意思。但根据句意C项更合适。 

28. This place, originally a small town, has been____   into a modern city. 
A. transported                  B. transferred 
C. transmitted                  D. transformed
答案：D 词义辨析。Transported 转移，转运。Transferred 转移，调任。Transmitted 传播，发射。Transformed转换，改变，改造。根据句意选D项。

29. There was nobody____ when we came round the corner. 
A. out of sight                  B. at sight 
C. by sight                     D. in sight
答案：D 短语辨析。D项 in sight 是看得见，在视线之内。所以应选D。 

30. We’ll be only too glad to attend your party_____ we can get a baby-sitter. 
A. so far as                     B. provided that 
C. unless                       D. except that
答案：B 短语辨析。so far as 就…来说。provided that 假设，如果，相当于if。unless 除非…才…。except that 除了…之外。根据句意应选B。 

31. They couldn’t ____ him of his mistake. 
A. advise                        B. convince 
C. persuade                      D. believe
答案：B 词义辨析。根据句意和后面的介词of可以排除A和D项。B项convince 是证明，是以理服人。 C项persuade 是说服，是通过感情服人。根据句意应选B。