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單項(xiàng)選擇題

Where is the rail service better than U.S? （）

A.Canada
B.Europe
C.Japan
D.Nowhere

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單項(xiàng)選擇題

If you make different trade in different countries, you must take different transport modes? （）

A.Yes
B.Not
C.It must be based on cost
D.Not mention in the paragraph

單項(xiàng)選擇題

Pipeline is low cost and reliable. Is it true? （）

A.Dependable
B.Not
C.Yes
D.Not mention here

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