21. We learn from the first paragraph that two systems of automated highways .

　　A) are being planned C) are now in wide use

　　B) are being modified D) are under construction

　　22. A special-purpose lane system is probably advantageous in that .

　　A) it would require only minor changes to existing highways

　　B) it would achieve the greatest highway traffic efficiency

　　C) it has a lane for both automated and partially automated vehicles

　　D) it offers more lanes for automated vehicles

　　23. Which of the following is true about driving on an automated highway?

　　A) Vehicles traveling on it are assigned different lanes according to their destinations.

　　B) A car can join existing traffic any time in a mixed lane system.

　　C) The driver should inform his car computer of his destination before driving onto it.

　　D) The driver should share the automated lane with those of regular vehicles.

　　24. We know from the passage that a car can enter a special-purpose lane .

　　A) by smoothly merging with cars on the conventional lane

　　B) by way of a ramp with electronic control devices

　　C) through a specially guarded gate

　　D) after all trespassers are identified and removed

　　25. When driving in an automated lane, the driver .

　　A) should harmonize with newly entering cars

　　B) doesn’t have to rely on his computer system

　　C) should watch out for potential accidents

　　D) doesn’t have to hold on to the steering wheel

　　Passage Four

　　Questions 21 to 30 are based on the following passage.

　　Taking charge of yourself involves putting to rest some very prevalent myths. At the top of the list is the notion that intelligence is measured by your ability to solve complex problems; to read, write and compute at certain levels; and to resolve abstract equations quickly. This vision of intelligence asserts formal education and bookish excellence as the true measures of self-fulfillment. It encourages a kind of intellectual prejudice that has brought with it some discouraging results. We have come to believe that someone who has more educational merit badges, who is very good at some form of school discipline is “intelligent.” Yet mental hospitals are filed with patients who have all of the properly lettered certificates. A truer indicator of intelligence is an effective, happy life lived each day and each present moment of every day.