Highways in the United States
The United States is well-known for its network of major highways designed to help a driver get from one place to another in the shortest possible time. __1__ these wide modern roads are generally __2__ and well maintained， with few sharp curves and __3__ straight sections， a direct route is not always the most __4__ one. Large highways often pass __5__ scenic areas and interesting small towns. Furthermore， these highways generally __6__ large urban centers which means that they become crowded with __7__ traffic during rush hours， __8__ the fast， direct way becomes a very slow route.
However， there is almost always another route to __9__ if you are not in a hurry. Not for from the relatively new superhighways， there are often older， __10__ heavily traveled roads which go through the countryside. __11__ are good lane roads; others are uneven roads curving __12__ the country. These secondary routes may go up steep slopes， along hilly cliffs or down frightening hillsides to towns __13__ in deep valleys. Though these are less __14__ routes， longer and slower， they generally go to places __15__ the air is clean and the scenery is beautiful， and the driver may have a chance to get a fresh， clean view of the world.
1. A Although B But C Since D Because
2. A uneven B bumpy C rough D smooth
3. A little B much C many D few
4. A terrible B horrible C tolerable D enjoyable
5. A to B into C at D by
6. A merge B connect C combine D mix
7. A busy B small C large D heavy
8. A when B where C which D that
9. A walk B go C take D fix
10. A more B less C very D extremely
11. A All of these B None of these C All roads D Some of these
12. A out of B out C through D from
13. A lying B lie C lies D lay
14. A direct B indirect C enjoyable D beautiful
15. A these B which C that D where
Keys： ADCDD BDACB DCAAD