Many compute’languages provide a mechanism to call (73) provided by libraries such as in .dllsA.lnstructionsB.functionsC.subprogramsD.subroutines

Are you looking for a good book to read? Do you need information about universities in the United States? Do you want to know the correct price of a used car? Would you like to read newspapers and magazines from all over different countries? Do you need a quiet place to study? Did you answer yes to any of these questions? Then you should visit the information placeyour local library.

A library is more than just a place where books are stored. A library is a source of information. The information may come from books (fiction , nonfiction, or reference book), from periodicals (newspapers, magazines, and journals), from audio-visual materials (records, cassettes, microfilms, video tapes, etc.), or even from a computer terminal.

Students go to libraries to study and write research papers. The periodicals room of a university library is where foreign students often find newspapers and magazines from their countries . In the reference room, they can find catalogs(目录) from many universities in the U.S. and other countries. If you are buying a used car, the reference librarian can show you the Blue Book which lists the prices of new and used cars. People who need information in a hurry can telephone the reference librarian at many libraries.

There are as many different library services as there are types of people who use them. Children’s libraries provide materials for young readers. They sometimes have storytellers who read stories to groups of children , and a few have computers for the children to play with. Music lovers can listen to recordings of their favorite musicians in music libraries . Some libraries have painting and sculpture exhibits, and most libraries offer special services for blind people, such as books in Braille, ―talking‖ books , and Kurzweil Reading Machines.

Libraries provide entertainment as well as information. Novels and short stories from a library’s fiction collection are a good source of enjoyable reading practice. Public libraries often sponsor lectures on topics of interest to member of the community, and a few even offer concerts and films. No matter what your interests are, you will find that a library can be a great place to enjoy yourself while you learn.

1.What is another name for a library?()

A.A bookstore.

B.The periodicals room.

C.A reference librarian.

D.The information place

2.In the reference room of the library you can find().

A. the fiction collection

B. newspapers and magazines

C. university catalogs

D. materials for young readers

3.Which of the following is NOT an example of a library service?()

A. Used cars.

B. Art exhibits.

C. Children’s storytellers.

D. Kurzweil Reading Machines

4."A library can be a great place to enjoy yourself while you learn." This means you can()in a library.

A. talk and laugh as much as you want

B. find entertainment and information

C. play with computers

D. enjoy yourself by doing everything you can

5.What is the main idea of the whole text? Choose the BEST answer.()

A. There are many kinds of libraries.

B. There are many books stored in a library.

C. Libraries provide entertainment.

D. Libraries offer many different services.

Project manager believes that modifying the project scope may provide added value for the customer . The project manager should （73）.

A.change the scope baseline

B.contact the customer to determine if the change adds value

C.call a meeting of the change control board

D.change the project’s objectives

Many computer languages provide a mechanism to call（ ）provided by libraries such as in .dlls.

A.instructions B.functions C.subprograms D.subroutines

● A transport layer protocol usually has several responsibilities. One is to create a process-to-process communication; UDP uses （71） numbers to accomplish this. Another responsibility is to provide control mechanisms at the transport level. UDP does this task at a very minimal level. There is no flow control mechanism and there is no （72） for received packet. UDP,however, does provide error control to some extent. If UDP detects an error in the received packet, it will silently drop it．

The transport layer also provides a connection mechanism for the processes. The （73） must be able to send streams of data to the transport layer. It is the responsibility of the transport layer at （74） station to make the connection with the receiver, chop the stream into transportable units,number them, and send them one by one. It is the responsibility of the transport layer at the receiving end to wait until all the different units belonging to the same process have arrived, check and pass those that are （75） free, and deliver them to the receiving process as a stream.

（71）A．hop B．port C．route D．packet

（72）A．connection B．window C．acknowledgement D．destination

（73）A．jobs B．processes C．programs D．users

（74）A．sending B．routing C．switching D．receiving

（75）A．call B．state C．cost D．error

A. up to 18 virtual libraries, 64 virtual drives, and 55000 virtual cartridges

B. up to 6 virtual libraries, 128 virtual drives, and 110000 virtual cartridges

C. up to 12 virtual libraries, 256 virtual drives, and 128000 virtual cartridges

D. up to 24 virtual libraries, 512 virtual drives, and 256000 virtual cartridges

A. to provide a mechanism to dynamically assign vlan membership to switch ports

B. to allow traffic to be carried from multiple vlans over a single link between switches

C. to allow native vlan information to be carried over a trunk link

D. to provide a mechanism to manually assign vlan membership to switch ports

E. to allow for managing the additions,deletions,and changes of vlans between switchs