【单选题】【消耗次数：1】
住宅需求的价格弹性(Ed)是指住宅商品的价格变化的比率所引起的住宅需求量变动的比率，当Ed大于0且小于1的时候，表明商品（）
①
寓有价格弹性
②
缺乏价格弹性
③
无弹性
④
完全弹性
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