Question

About 110 million people moved to this city. The population is ____________ as ten years ago.

1. A.
   as twice large
2. B.
   twice as large
3. C.
   as many twice
4. D.
   twice as many

Answer 1

B
试题分析：考查倍数表达法：这题使用的是：“A+倍数+as+形容词或副词的原级+as+B”，表示“A正好是B的多少倍”。句意：大约110百万的人搬到这个城市，人口是10年前的两倍。选B。
考点：考查倍数表达法
点评：倍数表达要牢记，倍数表达法是高中英语教学的重点，也是历届高考的热点。当我们要表达甲是乙的几倍时，通常用句型来表示：
1. “A+倍数+形容词或副词的比较级+than+B”，表示“A比B大（长、高、宽等）多少倍”。如：
　This rope is twice longer than that one. 这根绳子是那根绳子的两倍长（比那根绳子长一倍）。
2.“A+倍数+as+形容词或副词的原级+as+B”，表示“A正好是B的多少倍”。如：
　Asia is four times as large as Europe. 亚洲的面积是欧洲的四倍。
3. “A+倍数+the size/height/length/width， etc+of+B”，表示“A正好是B的多少倍”。如：
This street is four times the length of that one. 这条街是那条街的四倍长。
4. “……times+what+从句”。如：　The production is now three times what it was ten years ago. 现在的产量比十年前增加了两倍。