Section A
Directions ：There are 4 passages in this part．Each passage is followed by some questions or unfinished statements． For each them of them are for choices marked A , B, c and D. You should decide on the best choice and blacken the corresponding letter on the Answer Sheet with a pencil.
Questions 21 to 24 are based on the following passage ：
Americans like to do business without leaving their cars. You'll see drive-in banks，drive-in restaurants， drive-in churches and drive-in movies.
When driving in the U.S., it's a good idea to have an international river's license if you don't have a state license. Each of the fifty states has its own traffic laws。 Get information when you cross the border into a state at a tourist information center．
There is a national speed limit of 55 miles per hour. Americans are generally polite about letting cars enter busy streets. They usually stopfor people who are walking to let them cross the street. In many states you may turn right after stopping at a corner, even if there is a red light. On some roads there may be a minimum speed.
If you rent a car, ask the company what to do in case your car breaksdown. Some companies will ask you to call a special number. Others will want you to have the 'car repaired. They will partly deduct the cost of the repair from your bill.
Mileage'' can mean two things. It may mean the total number of miles a car has been driven. We say “This car only has 10, 000 miles on it; ithas low mileage.” On the other hand, “gas mileage” is the number of miles a car can travel on one U. S. gallon of gas. For example, a big car hat gets 25 miles to the gallon gets very good mileage. A small economy car should get at least 35 miles to the gallon when it's new.
21. If you have a state driver's license,_________ .
A. you can drive anywhere in the U. S.
B. you don't have to apply for an international driver's license
C. You cannot across the border in a car
D. you must know the traffic laws of another state before you enter it .