问题补充：
The city of Chengdu has grown so fast that its at least what it used to be．
A. five times the size of
B. five times the size as large as
C. five times larger
D. five limes size as
答案：
(答案→)A. five times the size of
B. five times the size as large as
C. five times larger
D. five limes size as
解析：考查多个限定词的位置，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”包括：冠词、物主代词、指示代词、或数词，它位于各类形容词前。它本身分为三位，即：前、中、后。前位限定词有all、half、both、分数和倍数；中位限定词有冠词、指示代词、物主代词等；后位限定词有基数词和序数词，但序数词位于基数词前。如:both my hands、all half his income等。“描绘”性形容词如：beautiful、bad、cold、great等。“大长高”表示大小、长短、高低等一些词。表示“形状”的词如：round square等。“国籍”指一个国家或地区的词。“材料”的词如：wooden, woolen, stone,silk等。“作用类别”的词如：medical, college，writing desk，police car等。本题的序数词last放在few前面，后面接sunny是描述性的形容词。所以选A
