Questions 26 to 30 are based on the following passage.
There is no denying that students should learn something about how computers work, just as we expect them at least to understandthat the internal combustion engine(燃) has something to do with burning fuel, expanding gases and pistons () being driven. For people should have some basic idea of how the things th at they use do what they do. Further, students might be helped by a course that considers the computer's impact on society. But that is not what is meant by com puter literacy. For computer literacy is not a form of literacy(写)it is a trade skill that should not be taught as a liberal art.
Learning how to use a computer and learning how to program one are two distinct activities, A case might be made that the competent citizens of tomorrow should free themselves from their fear of computers. But this is quite different from s aying that all ought to know how to program one. Leave that to people who have c hosen programming as a career. While programming can be lots of fun, and while o ur society needs some people who are experts at it, the same is true of auto repair and violinmaking.
Learning how to use a computer is not that difficult, and it gets easier all the time as programs become more"userfriendly". Let us assume that in the future everyone is going to have to know how to use a computer to be a competent citiz en. What does the phrase "learning to use a computer"mean? It sounds like "le arning to drivea car", that is, it sounds as if there is some set of definite skills that, once acquired, enable one to use a computer.
In fact,"learning to use a computer"is much more like"learning to play a game", but learning the rules of one game may not help you play a second game, whose rules maynot be the same. There is no such a thing as teaching someone how to use a computer. One can only teach peple to use this or that program and generally that is easily accomplished.
26. To be the competent citizents of tomorrow, people should _______.
A) try to lay a solid foundation in computer science
B) be aware of how the things that they use do what they do
C) learn to use a computer by acquiring a certain set of skills
D) understand that programming a computer is more essential than repairing a car

27. In the second paragraph "violinmaking"is mentioned to show that _______ .
A) programming a computer is as interesting as making a violin
B) our society needs experts in different fields
C) violin making requires as much skill as computer programming
D) people who can use a computer don't necessarily have to know computer program-
ming

28. Learning to use a computer is getting easier all the time because _______ .
A) programs are becoming less complicated
B) programs are designed to be convenient to users
C) prograrnming is becoming easier and easier
D) programs are becoming readily available to computer users

29. According to the author,the phrase"learning to use a computer"(Lines3,4,Para.3)
means learging _______.
A) a set of rules
B) the fundamentals of computer science
C) specific programs
D) general principles of programming

30. The author's purpose in writing this passage is _______.
A) to stress the impact of the computer on society
B) to explain the concept of computer literacy
C) to illustrate the requirements for being competent citizens of tomorrow
D) to emphasize that computer programming is an interesting and challenging job