Why is it difficult to say exactly how many miles of improved waterways are in operation?A
Why is it difficult to say exactly how many miles of improved waterways are in operation?
A.The most recent figures is for 1975 and the figure is declining.
B.Water transport's market there goes up and down frequently.
C.So few miles of inland waterways exist that no one has bothered to count them.
D.You must know whether to include coastwise and intercostals shipping in the figure.