—Which of those electronic dictionaries do you like most? — . They are both expensive and

问题补充：

—Which of those electronic dictionaries do you like most?

— . They are both expensive and of little use.

A. Both

B. None

C. Neither

D. All

答案：

A. Both

(答案→)B. None

C. Neither

D. All

解析：本题考查代词。根据语境They are both expensive and of little use可知用否定，neither为两者都不，none为三者或三者以上都不，故选B。