单项选择题
A.Very long B.Ten thousands of miles C.Thousands of miles D.Thousands of kilometers
（）Which area is the most commodity shipped in water tra...
单项选择题（）Which area is the most commodity shipped in water transport?
A.In international deep sea B.In lakes C.In river and canals D.Coastal ocean
What is the meaning “speed is not of primary importance...
单项选择题What is the meaning “speed is not of primary importance”?（）
A.Speed is important B.Speed is not the most important C.Speed is mainly important D.Speed is first importan
What are transported mainly by water?（）A.Raw materialsB...
单项选择题What are transported mainly by water?（）
A.Raw materials B.Heavy, bulky and low value commodities C.Semi-processed D.Great amount goods
