Generally speaking, 95% of the cargos transported on China-Europe ______________ are 40ft containers. 一般说来，中欧班列承运的95%的__________都是40英尺的集装箱。
A、passenger train 旅客列车
B、cargo block train 货物列车
C、freight transport 货物运输
A、passenger train 旅客列车
B、cargo block train 货物列车
C、freight transport 货物运输