——Could you tell me ____?      ——It’s twenty minutes by underground.

A．how can I get to your school

B．how much it costs to get to your school

C．how far it is from your home to your school

D．how long does it take me to get to your school

关于遥感技术的说法，正确的是(　　)

A．传感器是进行信息处理和信息分析的仪器

B．物体的各类性质、环境条件不同，但其反射辐射的电磁波相同

C．一幅陆地卫星图片可以把整个地球拍下来

D．从传感器接受信息到遥感信息的应用的全过程，称为遥感技术