问题补充：
When you study the local map，you’ll find this town is .
A. twice the size of that one
B. twice as a large town as that
C. twice as larger as that one
D. twice as larger a town as that
答案：
A. twice the size of that one
B. twice as a large town as that
C. twice as larger as that one
D. twice as larger a town as that
解析：A
解析句意为：当你研究当地的地图时，你会发现这座城镇是那个的两倍大。倍数的表达方式：A is＋倍数＋the＋名词＋of B；B项中不定冠词位置错误；C、D两项中as后应用形容词原级。
