【題目】E-mail is a valuable _____ for college students at any level.

A. hand B. tool

C. product D. data

【答案】B

【解析】 hand"手"； tool“工具”；product“產(chǎn)品”；data“數(shù)據(jù)，資料”。句意：電子郵件對各種水平的大學(xué)生來說都是一種有用的工具。由句意可知應(yīng)選B項。

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