As sentenças abaixo from retiradas de um texto sobre vírus de computador. Coloque ao lado de cada trecho o número que corresponde a cada subtítulo abaixo.

(1) O que é um vírus de computador
(2) Os danos provocados por vírus
(3) Como um vírus infecta um computador
(4) A função do antivírus
(5) Métodos comuns usados para detectar vírus

There are two common methods that an anti-virus software application uses to detect viruses. The first, and by far the most common method of virus detection is using a list of virus signature definitions. The second method is to use a heuristic algorithm to find viruses based on common behaviors. ( )

A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or Internet, or by carrying it on a removable medium such as a floppy disk, CD, or USB drive. ( )

The original virus may modify the copies, or the copies may modify themselves, as occurs in a metamorphic virus ( )

A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user. ( )

Many users install anti-virus software that can detect and eliminate known viruses after the computer downloads or runs the executable ( )