A、A small town where computers were sold. B、A private computer school. C、A library of computer books. D、A project about computer

Computer people talk a lot about the need for other people to become "computer-literate", in other words, to learn to understand computers and what makes them tick. Not all experts agree, however, that is a good idea.
    One pioneer, in particular, who disagrees, is David Tebbutt, the founder of Computertown U. K. Although many people see this as a successful attempt to bring people closer to the computer, David does not see it that way.[29]He says that Computertown U. K. was formed for just the opposite reason — to bring computers to people and make them "people-literate".
    David first got the idea when he visited one of America’s best-known computer "guru" figures, Bob Albrecht, in the small university town of Palo Alto in Northern California. Albrecht had started a project called Computertown U. S. A. in the local library, and the local children used to call round every Wednesday to borrow some time on the computers there, instead of borrowing library books. Albrecht was always on hand to answer any question and to help the children discover computers in their own way.
    Over here, in Britain, Computertowns have taken off in a big way, and there are now about 40 scattered over the country. David Tebbutt thinks they are most successful when tied to a computer club. He insists there is a vast and important difference between the two, although they complement each other.
    The clubs cater for the enthusiasts, with some computer knowledge already, who get together and eventually form an expert computer group. This frightens away non-experts, who are happier going to Computertowns where there are computers available for them to experiment on, with experts available to encourage them and answer any question. They are not told what to do, they find out.
29. What’s the purpose of establishing Computertown U. K. , according to David Tebbutt?
30. What is the Computertown U. S. A. according to the passage?
31. How does a Computertown differ from a computer club according to the passage?