[填空题]A
What is to happen about transport Evidently there are huge and important changes in prospect. A decade or so from now, there will have been yet another transformation in the way in which people and their goods are moved from place to place. Old techniques are being faced with attenuation or even extinction, sometimes because better methods of traveling have come along but sometimes simply because the old methods have become intolerable.
B
The development of recent decades most obviously likely to be continued is the tendency for alternative methods of traveling to coexist, and so to offer potential travelers a choice. Within large cities, underground transport is usually an alternative to several ways of traveling on the surface. Roads, railways and airlines are in competition, and there are still people who cross the North Atlantic by sea. (Most freight goes that way, of course.)
C
Oil tankers could decisively affect the pattern of petroleum dis

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