题目内容：
回答题American Roads
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. Although these wide modern __31__ are generally smooth and well maintained, with few sharp curves and straight sections a direct route is not always the most __32__ one. Large highways often pass by scenic areas and interesting __33__ Furthermore these highways generally connect large urban centers which __34__ that they become crowded with heavy traffic during rush honey the "fast direct" route becomes a very slow route. However, there is almost always another route to take __35__ you are not in a hurry. Not far from the __36__ new "superhighways there are often older, __37__heavily traveads which go through the countryside. Some of these are good two-lane roads； others are uneven roads curving through the country. These secondary routes may go __38__ steep slopes, along high cliffs, or down frightening hillside to towns __39__ in deep valleys. Through these less direct routes, longer and slower they , they generally go to places __40__ the air is clean and scenery is beautiful, and the driver may have a chance to get a fresh clean view of the world.
请在第__31__处填上正确答案。 A．less
B．up
C．enjoyable
D．relatively
E．means
F．roads
G．lying
H．through
I．which
J．if
K．where
L．towns
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答案解析：