回答题： ·Read the article below about highways in the United States． ·Choose the best word or phrase to fill each gap from A，B，C or D on the opposite page． ·For each question（19-33），mark one letter（A，B。C or D）on your Answer Sheet． ·There is arr example at the beginning（0）． 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．（19） ______these de modem roads are generally（20）______and weft maintained with（21） sharp CUn，es alld straight sect-ions，a direct route is not always the most（22） one．Large highways often pass（23）______ scenic areas and interesting small towns．Furtherrnore．these highways generally（24）______large urban centers，which means that they become crowded with（25）______traffic during rush hours，（26）the“fast，direct”route becomes a very slow route． However，there is almost always another route to take（27）______you are not in a hurry Not far from the（28）…．．．．new“superhighways”，there are often older（29） heavily traveled roads which go through the countryside． （30）______of these are good tw0—lane r。ads；others are uneven roads curving throut the c。untry．These secondary routes may go up steep slopes，along high（31）______，or down frightening hillside to towns（32）______in deep valleys．Through these less direct routes，longer and slower，they generaly go to places（33）______the air is clean and scenery is beautiful，and the driver may have a chance to get a flesh，clean view of the world． 19题答案为 查看材料