[多选题] A virus is a program that reproduces its own code by().

1、[单选题]The software that controls the interaction between the input and output hardware is called BIOS,which stands of()

• A、Classic Input Output System
• B、Junior Input Output System
• C、Advanced Input Output System
• D、Basic Input Output System

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2、[单选题]Their company used international lawyers to prosecute a crime ring involving software＿＿＿＿＿＿＿＿in Thailand.

• A、cloning
• B、piracy
• C、copying
• D、duplication

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3、[单选题]Electronic commerce may be defined as the entire set of processes that suport()activities on a(n)()and involve information analysis.

• A、society,human
• B、personal,society
• C、commercial,network

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4、[多选题]A digital computer is generally made up of five dstinct elements:a central processing unit,().

• A、memeory storage devices
• B、crt screen
• C、a bus
• D、output devices
• E、input devices

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5、[多选题]Viruses all have two phases to their eｘecution,the()and the().

• A、creaｔe phase
• B、del()ete phase
• C、infection phase
• D、attack phase

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