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4.形容词变名词

efficient有效率的---efficiency 效率patient---patience/impatience 耐性/无耐心dependent---dependenc依赖性independent---independency 独立性true---truth 真相high---height 高度wide---width 宽度long---length 长度possible---possibility 可能responsible---responsibility 责任;职责urgent---urgency 紧急prosperous---prosperity 繁荣accurate---accuracy 准确性