—Which one do you want to buy an iPod touch 4 an iPad 3 or an iPhone 5?—. They are too e

问题补充：

—Which one do you want to buy, an iPod touch 4, an iPad 3 or an iPhone 5?

—. They are too expensive.

A. All

B. Both

C. None

D. Neither

答案：

A. All

B. Both

(答案→)C. None

D. Neither

解析：考查词语辨析。考查不定代词的用法。all意为“都；全部”，强调三者或者三者以上的人或事物；both意为“两者都……”；none意为“三者或三者以上都不”neither意为“两者都不”。句意为“你想买哪一件？”选择对象是三个，回答为“它们太贵”。故选C。