-I want to buy the book Harry Potter. Do you know its ? Not very well. Maybe fifty

问题补充：

---I want to buy the book Harry Potter. Do you know its ?

--- Not very well. Maybe fifty yuan.

A. cover

B. size

C. color

D. price

答案：

A. cover

B. size

C. color

D. price

解析：考查名词辨析。A 封面；B 尺寸；C 颜色 ；D价格。句意 我想买本哈里波特，你知道价格吗？可能是五十元。根据下方提到 Maybe fifty yuan 故是在问价格，所以选D项。