题目

This washing machine is environmentally friendly because it uses________water and electricity than________models. A．less；older                  B．less；elder C．fewer；older                 D．fewer；elder 答案：A　[句中water和electricity为不可数名词，故排除C、D两项。elder“年长的”，older为old的比较级“旧的，旧时的，从前的”。]

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