—Would you please find a world map which is drawn to a scale of                      .

—Yes,sir.Here you are.

A．one out of ten thousand

B．one in ten thousands

C．one to ten thousand

D．one of ten thousands

一根长12米的绳子，第一次剪去3.9米，第二次剪去2.2米．现在这根绳子比原来短了多少米？