题目内容
听力原文：W: Our President, since leaving office five years ago, [19] has spent a huge amount of time promoting AIDS awareness and prevention.
M: That is the thing I have been doing.
W: I know you just came back from Johannesburg, South Africa, part of your six-nation tour of Africa.
M: Right. You know, Africa has been more affected by AIDS than any other place in the world.
W: Why？
M: [20] I think that's partly because there were not systems in place both to prevent people from contracting it and spreading it.
W: How is your work getting on？
M: I think we are beginning to make some headway not only in Africa, but in other places where it's a problem.
W: Can you name some？
M: It is spreading worldwide, growing even faster now in terms of the rate of increase in the former Soviet Union and the Caribbean, India, China.
W: I know your foundation is making a great deal of progress. Is it reasonable to expect that it can be brought under control？
M: Well, yes, [21] but you have to take care of education and prevention and care and treatment at the same time, and the two things speed up each other.
W: How should we understand they speed up each other？
M: When you've got to treat people, you've got to overcome any kind of cultural dislike, talk about it and get young people to behave responsibly and you've got to do whatever you can to get as many people tested as quickly as possible but keep in mind that this is a disease that's one hundred percent preventable.
(20)
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These are convenient beliefs for anyone justifying some e-commerce share prices, but they are already mostly wrong. The reasons should surprise no one. The Internet is not a dominant technology but rather a network of people. It is a rich and highly flexible means of communicating that is rapidly achieving pervasiveness because more and more people find it easy and convenient to use. But it is those people's preferences that will count; and for most people, shopping is more than just a means to an end. Even if the Internet provided a perfectly efficient way to shop it would not provide a satisfactory alternative to the physical enjoyment of sniffing a ripe melon, say, or trying on a cashmere sweater.
Of course, some products, such as music and banking, can be distributed electronically with success and cost saving. But most purchases cannot be reduced to digital code. And distributing physical goods is cumbersome (笨重的) and expensive. Behind even the most exciting user interface there are old-fashioned warehouses and lorries, customers who decline to sit at home waiting for purchases to arrive, and goods that must be re-wrapped and expensively returned. No wonder that the cost of getting goods to customers' homes so often soaks up the notional price advantages of e-commerce.
What Internet shoppers have quickly realized is that the web is an addition to, and not a substitute for, their shopping habits. It is wonderful for gathering up-to-date information about products and prices. Cyber Dialogue, a research firm, estimates that in 1998 23m Americans sought information online, but then made their purchases offline, compared with only 17.7m who did the whole thing online.
The author compares ______ of the online sale to the effect of neutron bomb attack.
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