049.
Many rules govern drivers on American streets and highways. The most common ones are the speed limit. The speed limit regulates how fast a car may go. On street in the city, the speed limit is usually 25 or 35 miles per hour. On highways between cities, the speed limit is usually 55 miles per hour. When people drive faster than the speed limit, a policeman can stop them. The policeman gives them pieces of paper which people call traffic tickets. Traffic tickets tell the drivers how much money they must pay. When drivers receive too many tickets, they probably cannot drive for a while.
The rush hour is when people are going to work or going home from work. At rush hour there are many cars on the streets and traffic moves very slowly. Nearly all American cities have rush hours.
Drivers do not get tickets very often for speeding during the rush hours because they cannot drive fast.

正确答案：
(1) 正确答案为C。根据On highways between cities, the speed limit is usually 55 miles per hour. 高速公路上的限速是每小时55英里。因此可知C项正确。
(2) 正确答案为C。根据Traffic tickets tell the drivers how much money they must pay. 罚单上写明司机要交多少罚款。可知C项正确。
(3) 正确答案为C。根据When drivers receive too many tickets, they probably cannot drive for a while.司机要是收到了太多罚单，他们就有一段时间不能开车了。因此可知C项正确。
(4) 正确答案为A。根据At rush hour there are many cars on the streets and traffic moves very slowly. 在高峰期，路上有许多车，车辆缓慢前行。可知，在高峰期时会出现交通拥堵，因此A项正确。