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单项选择题
A．Computers are commonly and widely used in home and offices nowadays.B．Computers are easily to be attacked.C．Adopting good computing practices is a good advice to protect the computer.D．The viruses are too fearful, computer is not safe any more.
A．Computers are commonly and widely used in home and offices nowadays.
B．Computers are easily to be attacked.
C．Adopting good computing practices is a good advice to protect the computer.
D．The viruses are too fearful, computer is not safe any more.
单项选择题
A．Avoid getting exercise during the day.B．Exercise regularly.C．Sleep late when you feel like it.D．Think of sleep all the time.
A．Avoid getting exercise during the day.
B．Exercise regularly.
C．Sleep late when you feel like it.
D．Think of sleep all the time.
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