题目内容
Today, housework has been made much easier by electrical _____.
A. facilities B. appliances C. instruments D. equipment
【解析】 B. 考查名词的用法。electric appliances电器用具,facilities公用设备。equipment设备,装备,是集合名词,指“设备”的总称,只有复数形式。instrument仪器。
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