Sleep mode itself, once a pretty unreliable option—you never knew if you would be able to wake your computer without having to reboot (重新启动)
it—has been vastly improved with newer operating systems. If you want your computer to consume as little energy as possible when not in use, shut it down. If you want it to consume zero energy, you’re going to have to unplug (拔去……的电源插头) it.
Your computer can be in only three states: on, sleep or off—each of which draws some level of electric current.A computer that is “on” will either be actively processing information or sitting idle, depending on whether the user is typing a document, reading an e-mail or has stepped away briefly. The amount of wattage (瓦特数) drawn when the computer is on varies greatly depending on whether it is a laptop or a desktop computer. The latter uses more energy because desktop power supplies are less efficient and require a separate and often larger, power-hungry monitor.
It also varies based on the type of work being done: complex calculations requiring intensive processing are more power-hungry, whereas writing or Web browsing consumes far less electricity.
16.If sleep mode goes wrong, what will probably happen to your computer?
A.It will consume as little energy as possible.
B.It is more likely to be damaged by a virus picked up from the Internet.
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