You can't imagine what a ___ scene it is to see a vast golden field of crops bathed in the golden sun,

with wind blowing gently ,birds singing sweetly in the trees and people harvesting crops happily. [ ]

A. fantastic

B. strange

C. quick

D. uncomfortable

调车手信号中（）显示方式，昼间为展开的绿色信号旗上下摇动，夜间为绿色灯光上下摇动。

A、减速信号

B、指挥机车向显示人方向来的信号

C、指挥机车向显示人方向稍行移动的信号

D、指挥机车向显示人反方向去的信号