But it is hardly inevitable that companies on the Web will need to resort to push strategies to make money. The examples of Virtual Vineyards, Amazon.com, and other pioneers show that a Web site selling the right kind of products with the right mix of interactivity, hospitality, and security will attract online customers. And the cost of computing power continues to free fall, which is a good sign for any enterprise setting up shop in silicon. People looking back 5 or 10 years from now may well wonder why so few companies took the online plunge.

　　55. We learn from the beginning of the passage that Web business__

　　[A] has been striving to expand its market

　　[B] intended to follow a fanciful fashion

　　[C] tried but in vain to control the market

　　[D] has been booming for one year or so

　　56. Speaking of the online technology available for marketing, the author implies that__

　　[A] the technology is popular with many Web users

　　[B] businesses have faith in the reliability of online transactions

　　[C] there is a radical change in strategy

　　[D] it is accessible limitedly to established partners

　　57. In the view of Net purists,__

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