Every Divx disc has a special code so that the rental shop can identify which disc__

DVD for Rent

1．A pay-for -play system for video DVD (digital versatile disc) will emerge by summer as an alternative, and possibly a competitor, to the DVD format currently available.

2．The new system called Digital Video Express (Divx),operates like a DVD player, except for the specially coded discs. These will cost $ 5 for initial viewing over a 48-hour period and can be viewed again for additional fees and even purchased for unlimited viewing.

3．Divx combines the service of a video rental store with the operation of a pay-per-view TV channel. Unlike a rented videotape, though, the Divx disc needn't he returned. The 48-hour viewing period doesn't begin until the disc is first played. Customers can retain the disc for replay in the future at an additional fee, or simply discard it. (Divx plans a collection and recycling programme.)

4．Subsequent plays, or the purchase of unlimited-viewing rights, are billed to the customer's Divx account and charged to a credit card. The player's built-in memory keeps track of all Divx plays, and relays this information by toll-free phone modern to the Divx record-keeping centre. Each Divx disc and player has a unique identification code, so the system knows which discs have been played and where—something that may raise concerns over privacy.

5．Some Divx discs could be converted for unlimited play at a price likely to be lower than buying a conventional DVD. Others, called Divx Gold, would be sold from the beginning for unlimited play without further charge. Although conventional DVDs will run in a Divx players, conventional DVD player will lack the decoding and communications ability to play Divx discs. Divx players will be offered by Panasonic, RCA and Zenith.

6．About 100 discs will be available initially from Disney, Dreamworks, Paramount, and Universal, growing to 500 titles within a year. Most of these will be released in the 4:3 pan-and- scan mode rather than in the 16:9 letterbox format. Other filmmakers have yet to adopt the Divx system. Which is owned by retailer Circuit City, the 350-store electronics chain that bankrolled its development.

A．Booming business of Circuit City

B．Superior quality of conventional DVD discs

C．An introduction of the new system Divx

D．Unlimited or permanent play of Divx discs

E．Disk-play tracking and billing systems

F．Expansion of the titles of Divx discs

Paragraph 2______

根据下列文章,请回答 23～30 题。

DVD for Rent

1 A pay-for-play system for video DVD will emerge by summer as an alternative, and possibly a competitor, to the DVD format currently available.

2 The new system, called Digital Video Express (Divx), operates like a DVD player, except for the specially coded discs. These will cost $5 for initial viewing over a 48-hour period and can be viewed again for additional fees and even purchased for unlimited viewing.

3 Divx combines the service of a video rental (出租的) store with the operation of a pay-per-view TV channel. Unlike a rented videotape, though, the Divx disc needn't be returned. Customers can retain the disc for replay in the future at an additional fee, or simply throw it away.

4 Subsequent plays, or the purchase of unlimited-viewing rights, are billed to the customer's Divx account and charged to a credit card. The player's built-in mernory keeps track of all Divx plays, and sends this information by toll-free phone modem (调制解调器) to the Divx record-keeping centre. Each Divx disc and player has a unique identification code, so the system knows which discs have been played and where.

5 Some Divx discs could be converted for unlimited play at a price likely to be lower than buying a conventional DVD． Others, called Divx Gold, would be sold from the beginning for unlimited play without further charge. Although conventional DVDs will run in a Divx player, conventional DVD players will lack the decoding (解码) and communications ability to play Divx discs. Divx players will be offered by Panasonic, RCA, and Zenith.

6 About 100 discs will be available initially from Disney, Dreamworks, Paramount, and Universal, growing to 500 titles within a year. Other film makers have yet to adopt the Divx system, which is owned by retailer Circuit City, the 350-store electronics chain that bankrolled (提供资金)its development.

第 23 题 Paragraph 2_____________

A．Booming Business of Circuit City

B．Superior Quality of Conventional DVD Discs

C．The New System Called Divx

D．Unlimited Play of Divx Discs

E．Disc-play Tracking and Billing Systems

F．Two Functions Combined

vx disc___________

disc___________

A．will not be taken back by the shop

B．is specially coded

C．is bankrolled by Panasonic, etc

D．is likely to be cheaper than the conventional DVD disc

E．has been played and where

F．is owned by retailer Circuit City

A．is not taken back by he shop

B．has been specially coded

C．is bankrolled by Panasonic, etc.

D．is lower in price than the usual DVD disc

E．has been played and where

F．is owned by retailer Circuit City

The Divx disc is different from the rented videotape in that once offered, Divx disc______

on surgery.

A．Giving patients greater mobility and quicker recovery

B．Suitable for every back-pain sufferers

C．Being less invasive and costly

D．With fewer post-operation side effects

prepared on computers, and exist as computer files before they are printed on paper. Often there are advantages to give readers access to the electronic versions of publications as well as--or even instead of--the printed versions.

Print publications have lots of advantages. Paper is pleasant to handle, easy to read, and very portable: you can read it almost anywhere. On the other hand, print has its weaknesses. Paper is expensive, and articles are often cut to fit the space available, printing and distributing paper is expensive and takes time. Printed materials are expensive to store and almost impossible to search. Electronic publishing offers solutions to all these problems.

Suppose a publisher makes the electronic copy of a newspaper or magazine available from the net, perhaps on the Internets World Wide Web. No paper is used and disc space is cheap, so internet publishing costs very little. Articles don' t have to be cut (though there is of course a limit to the amount people are willing to read on line). Internet publishing is fast, and readers can access material as soon as it becomes available: within minutes, instead of the next day, next week or next month. Internet publishing goes beyond geographical boundaries: the humblest local paper can be read everywhere form. New York to London to Delhi to Tokyo, Delivery costs are low because there are no newsagents to pay, and no postal charges: readers pick up the bills for their on-line sessions, also, computer-based publications are simple to store (on disc) and every word can be, searched electronically.

At the moment, newspapers and magazines, TV and radio stations, news agencies and book publishers are making content freely available on the Web because they are competing for "mind share". Perhaps they want to find out if they can attract and hold an audience on line, or perhaps they are afraid of missing out because "everyone else is doing it." But don' t count on things staying that way. Publishers are not in business to lose money.

What does the author probably foresee？

A．Readers will have more accesses.

B．Books and newspapers will be kept as computer files.

C．It will not make any sense to keep the printed versions.

D．Electronic publications will replace printed ones.

() { float a, b, c, disc, x1, x2, realpart, imagpart; scanf("%f%f%f",&a,&b,&c); printf("The equation"); if(【 】＜=1e-6) printf(" is not quadratic\n"); else disc=b*b-4*a*c; if (fabs (disc) ＜=1e-6) printf("has two equal roots:%-8.4f\n",-b/(2*a)); else if(【 】) { x1= (-b+sqrt (disc))/(2*a); x2= (-b-sqrt (disc))/(2*a); printf("has distinct real roots:%8.4f and %.4f\n",xl,x2); } else { realpart=-b/(2*a); imagpart=sqrt (-disc)/(2*a); printf("has complex roots:\n"); printf ("%8.4f+%. 4fi\n", realpart, imagpart); printf ("%8.4f-%. 4fi\n", realpart, imagpart); } }