When you study the local map, you'll find this town is ________ [ ]

A．twice as a large town as that

B．twice the size of that one

C．twice as larger as that one

D．twice as larger a town as that

货币所具有的表现和衡量其他一切商品价值大小的职能，叫价值尺度。货币之所以能充当这一职能，是因为（  ）

A．货币和其他商品一样，能够交换商品

B．货币是商品，具有价值

C．货币是商品，具有使用价值

D．货币是商品，能够表现价值