单项选择题
The large market share of transportation in China is （）transport.
A.air B.rail C.truck D.pipeline
单项选择题 There is no difference between the environmental logistics and （）one.
单项选择题 For small and medium-sized companies, those logistics management is still（）
单项选择题 The retailer and manufacturer （） about 5-10% of their merchandise being returned
