问题：
[单选] What kind of products do the air carriers deliver? （）
The high value 。Low density or weight。A and B 。Shortest time to transport。
问题：
[单选] How much is the percent of air transportation in all modes?（）
Less than 1% 。Lowest 。Lower 。Low。
问题：
[单选] Where is the most air freight shipped in the passenger aircraft?（）
Separately 。In same level 。In the lower part 。Not mention here。
问题：
[单选] How many tons does the cargo 737 carry?（）
100 tons 。Not clear 。More than 100 tons 。I don’t know。
问题：
[单选] How many categories are there inwater transport?（）
2 。3 。4 。Not available in the paragraph。
问题：
[单选] What are transported mainly by water?（）
Raw materials。Heavy, bulky and low value commodities。Semi-processed。Great amount goods。
问题：
[单选] What is the meaning “speed is not of primary importance”?（）
Speed is important 。Speed is not the most important。Speed is mainly important 。Speed is first importan。
问题：
[单选] （）Which area is the most commodity shipped in water transport?
In international deep sea 。In lakes 。In river and canals 。Coastal ocean。
问题：
[单选] How long the haul for international deep-sea movement usually?（）
Very long 。Ten thousands of miles 。Thousands of miles 。Thousands of kilometers。
问题：
[单选] How many flow are there in global logistics?（）
One 。Two 。Four 。Three。
