ID：8141-2586 Anti-Virus protects your computer from viruses by ____ your computer's memory and disk devices. A. deleting B. changing C. scanning D. replacing
ID：8141-2572 （翻译）1．A computer virus is a program designed to spread itself by fist infecting executable files or the system areas of hard and floppy disks and then making copies of itself.
2．In mathematic computing and computer applications, matrixes are used to arrange data into table form.
3．Deselect the text by clicking anywhere outside of the selected area on the page or pressing an arrow key on the keyboard.
