[单选题]

American Roads

The United States iswell-known for its network of major highways designed to help a driver get fromone place to another in the shortest possible time._______(51) these

wide modem roads aregenerally_______(52)and well maintained,with_______(53)sharp curves and straightsections,a direct route is not always the most_______(54)

one.Large highways oftenpass _______(55)scenic areas and interesting small towns.Furthermore,these highwaysgenerally _______(56)large urban centers,which means that

they become crowded with_______(57)traffic during rush hours,_______(58)the"fast,direct"route becomes a veryslow route.However,there is almost always another route

to take_______(59)youare not in a hurry.Not far from the_______(60)new"superhighways",thereare often older,_______(61)heavily traveled roads which go through the

countryside._______(62)ofthese are good two-lane roads; others are uneven roads curving through the country.Thesesecondary routes may go up steep slopes,along

high_______(63),or downfrightening hillside to towns_______(64)in deep valleys.Through these less directroutes,longer and slower,they generally go to places_______(65)

the air is clean andscenery is beautiful,and the driver may have a chance to get a fresh, clean viewof the world._________(61)

A.and

B.less

C.more

D.or

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