计算机专业英语

Computer viruses are programs that must be triggered or somehow __________ befor thet can infect your computer system and spread to others.Example include opening a document ________ with a “macro virus”,booting with diskette infected with a diskette with a “boot sector” virus,or double-clicking on an infected program file.Viruses can then be spread by sharing infected files an a diskette,notwork drive,or other ___________, by exchanging infected files over the Internet via e-mail attachments,or by ___________ questionable files from the Internet.

At the beginning of February,2001,UH Information Technology Services installed an e-mail virus _________ on its mail gateway.This software is able to  ________ out viruses sent as e-mail attachments before it is received by ITS customers.However,it is not foolproof and new and unrecognized  viruses may still be able to get through the filter.

1. The Creeper virus was first detected on ________, the forerunner of the Internet, in the early 1970s.

2. The term “computer virus” is sometimes used as a catch-all phrase to include all types of malware, even those that do not have the ability to __________ themselves.

3. Some viruses spread by _______ stored on these disks, while others installed themselves into the disk boot sector, ensuring that they would be run when the user booted the computer from the disk, usually inadvertently.

4. Most of  _______  are written in the scripting languages for Microsoft programs such as Word and Excel and spread throughout Microsoft Office by infecting documents and spreadsheets.

5. A program called “Elk Cloner” was the first __________ virus to appear “in the wild”—that is, outside the single computer or lab where it was created.

    machine-readable,instructions,compiled,human-readable,control

          C is a computer _______  language. That means that you can use C to create lists of

_______ for a computer to follow. C is one of thousands of programming languages currently

in use. C has been around for several decades and has won widespread acceptance because it

gives _______ maximum _____ and _______. 

          C is what is called a ______ language. This means that once you write your C program,

you must run it through a C ______ to turn your program into an _____ that the compuer

can run. The C program is the _______ form, while the executable that comes

out of the compiler is the ________ and executable form. What this means is that to write

and run a C program, you must have access to a C compiler.