以下哪项发明最有利于将世界各地联系在一起[ ]
A、造纸术
B、指南针
C、火药
D、印刷术
答案：B
移动加权平均法和一次加权平均法的不同之处在于移动加权平均法在每次收入存货时都要重新计算加权平均单价。 ( )
The house was situated on a hill over the village.()
A. above the village
B. beyond the village
C. under the village
D. within the village
