第21题: [单项选择]She has bought herself ______ dress. A. a cotton purple expensive B. an expensive purple cotton C. a purple expensive cotton D. a cotton expensive purple 参考答案:B 答案解析:正确的修饰顺序为an expensive purple cotton.该题考查名词修饰成分的词序问题。这里有一相关口诀:限定描绘大长高,形状年龄和新老,颜色国籍跟材料,作用类别往后靠。其中,“限定词”