两层Client/Server体系结构比三层Client/Server体系结构更安全可靠。（)

A.Client

B.Source

C.Server

D.Sink

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

File Transfer Protocol (FTP),a standard Internet protocol, is the simplest way to(1)exchange files between computers on the Internet. Like the Hypertext Transfer Protocol (HTTP), which transfers displayable Web(2)pages and related files, and the Simple Mail Transfer Protocol (SMTP), which transfers e-mail, FTP is an(3)application protocol that uses the Internet's TCP/IP protocols. FTP is commonly used to transfer Web page files from their creator to the computer that acts as their(4)server for everyone on the Internet. It's also commonly used to(5)download programs and other files to your computer from other servers.

As a user, you can use FTP with a simple(6)command line interface (for example, from the Windows MS-DOS Prompt window) or with a commercial program that offers a graphical user(7)interface. Your Web browser can also make FTP requests to download programs you select from a Web page. Using FTP, you can also(8)update (delete, rename, move, and copy) files at a server. You need to logon to an FTP server. However, publicly available files are(9)easily accessed using anonymous FTP.

Basic FTP support is usually provided as part of a suite of programs that come with TCP/IP. However, any FTP(10)client program with a graphical user interface usually must be downloaded from the company that makes it.

供选择的答案：

1．download 2．exchange 3．update 4．interface 5．server

6．client 7．command 8．pages 9．easily 10．application

A.seller；payee

B.seller；payer

C.client；payee

D.client；payer

ontainer from Hong Kong to the above mentioned port before that deadline.

out the chart below.

A welfare client is supposed to cheat. Everybody expects it. Faced with sharing a dinner of raw pet food with the cat, many people in wheelchairs I know bleed the system for a few extra dollars. They tell the government that they are getting two hundred dollars less than their real pension so they can get a little extra welfare money. Or, they tell the caseworker that the landlord raised the rent by a hundred dollars.

General statement:

A welfare client is expected to bleed the system for extra welfare money.

Examples:

o 1 ) ask him to fill in a form. and 2) emphasize the importance of this information. You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use "Li Ming" instead. You don' t have to write the address. (10 points )