The idea of natural language access to a database is not new, (21)still hasn’t been achieved. Most search engines are not able to (22) questions such as “Where can I get light bulbs?”or“ (23) legs does a horse have?”The answer (24)the questions can be found for certain on the Web, but the search engines are not able to understand the questions. (25) you have a page that has a question and an answer on it, then you may succeed, but this is a (26)case. Instead of receiving the answer “At shop XY in Z” or “four”you would receive a long list of search (27), as the search engines split up the question into(28). Every word in the(28)question is then searched (29).

The (30) between conventional and natural language search engines is the way pages get indexed. Unlike a conventional database, the symbolic approach to natural language processing involves treating words as nodes in a semantic network. The emphasis is then placed on the meaning of the words instead of the single words.

21、()

较小的机构也可以利用网络公司提供的服务。(take advantage of)

在国际业务中，电子签名越来越得到认同。(acceptable)

不要低估了商品质链按的价值。(underestimate)

你应该表明你了解自身优势、了解商机。(demonstrate)

Yahoo! is not alone in defining its strategy as working out what its customers (260m unique users every month) are looking for, and then trying to give it to them. (71. )[The first thing they want is to become better informed about products and prices.]“We operate our business on that belief,”says Jeff Bezos, Amazon’s chief executive. (72. )[Amazon became famous for books, but long ago branched out into selling lots of other things too; among its latest ventures are health products, jewellery and food.] Apart from cheap and bulky items as garden rakes, Mr Bczos thinks he can sell most things. And so do the millions of people who use eBay.

(73.) [And yet nobody thinks real shops are finished, especially those operating in niche markets.] (74.) [Many bricks-and mortar bookshops still make a good livings as do flea markers.] But many record shops and travel agents could be in for a tougher time. Erik Blachford, the head of lAC’s travel side and boss of Expedia, the biggest internet travel agent, thinks online travel bookings in America could quickly move from 20% of the market to more than half. (75.)[Mr Bezos reckons(估计)online retailers might capture (夺取)10—15% of retail sales over the next decade.] That would represent a massive shift in spending.

有三种基本的支付网关形式。(payment)

San Francisco and Tokyo are both located in earthquake_______(zone).

There is absolutely no_______(coordinate) between the different groups—nobody knows what anyone else is doing.

What_______(determine) whether you are a career success or a failure?

The UK is the biggest_______(consume) of tropical hardwoods after Japan.