单选题VRML is a（1）for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML, VRML adds the next level of interaction, structured graphics, and extra（2）（z and time） to the presentation of documents. The applications of VRML are（3）,ranging

A virtual storage area network (VSAN) is a collection of ports from a set of connected Fibre Channel switches, that form a virtual fabric. Which technology allows centralized storage services to be shared across different VSANs?（）

A.IVR

B.FSPF

C.FICON

D.SANTap

Who would want to build a virtual house on the Internet? Or spend hours online each week living inside a make-believe world? It sounds crazy, but thousands of video game enthusiasts do just that.

Online worlds are becoming more popular than ever. Many people have belonged to these online worlds for years. Inside these imaginary worlds, video gamers develop characters over time.

These characters learn skills, fight battles, build relationships, and even own property. Some communities inside these online worlds have several hundred thousand citizens!

The people role-playing in online worlds buy and sell things with virtual money. Many gamers earn virtual money by running successful tailor shops and weapons dealerships in their online worlds. Money and treasures can also be taken from victims in battle it’s a dangerous virtual world out there!

But gaining virtual wealth can be too time-consuming for the gamer who wants to buy his castle now. Serious game addicts have begun doing something the online world designers probably never imagined.

Some gamers are exchanging real-world money to buy virtual money and property for their online worlds. Using online auction sites such as eBay.com, gamers buy and sell whatever they need. A whole mini-economy has grown around this trade of goods.

Some of the most valuable items for sale in online worlds aren’t cheap. Sometimes they are rare, which makes them even more valuable. For example, consider a nice virtual house in a prime location. This property might cost as much as a new TV set in the real world!

For the person who doesn’t participate in these online worlds, the appeal must seem peculiar. What’s the attraction with these online worlds? Why would people spend money on something that doesn’t really exist?

The money being exchanged for those online swords and castles is real. The swords and castles aren’t. Absurd? Maybe. But the time and effort spent by the players is real. So is their love for online worlds. It seems only the human imagination can make something out of nothing!

(1)In the 1st paragraph, make-believe world refers to the following EXCEPT_____________.

A、virtual world.

B、online world.

C、imaginary world.

D、castles

(2)In the 1st paragraph, video game enthusiasts refers to _____________.

A、video gamers

B、characters

C、game designers

D、tailors

(3)The gamers could earn virtual money by the following EXCEPT _____________.

A、doing some business

B、designing some games

C、exchanging real-world money to buy virtual money

D、taking from victims in battle

(4)According to the author, human imagination _____________.

A、is nothing

B、is something

C、can be exchanged with virtual money

D、can make anything possible

(5)What’s the author’s attitude toward things online?

A、Positive

B、Negative

C、Neutral

D、Critical

VRML is a(151)for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML, VRML adds the next level of interaction, structured graphics, and extra(152)(z and time) to the presentation of documents. The applications of VRML are(153), ranging from simple business graphics to entertaining WWW page graphics, manufacturing, scientific, entertainment, and educational applications, and 3D shared virtual worlds and communities.X3D is the name under which the development of VRML is continued. X3D is based on XML and is backwards(154)with VRML. Furthermore, it is componentized, profiled, and extensible, which makes it possible to use X3D in very different(155), from high-end visualizations to lightweight applications.

A．link

B．format

C．structure

D．procedure