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    【题目】Various _____ of electric fans are now on display in the shop windows.

    A. boxes B. sizes

    C. standards D. brands

    【答案】D

    【解析】box“盒子”；size“尺寸”；standard“标准”. brand“品牌，商标”。句意：商店橱窗里现在正摆着各种品牌的电风扇。

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