答案：B

题目分析：考查倍数表达，句子意思“10年前我们村的人口是他们村人口的两倍”，所以选B

点评：倍数表达是高考常考内容，倍数表达要牢记，倍数表达法是高中英语教学的重点，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。

即学即练：As far as I know, the new highway is about______ the former one.

A. as wide as three times     B. three times the width of

C. longer than twice         D. the width of three times

选B