单项选择题

Salesmen use computers mainly to ______.

A．check the list of goods and materials that are kept in the store house
B．play games for pleasure
C．talk with their friends
D．write letters
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单项选择题
Mr Li wants to find out what day it is the day after National Day. Please help him find it out. It is ______.
A．Friday
B．Monday
C．Saturday
D．Sunday
单项选择题
In recent years, computer are being made ______.
A．smaller and cheaper
B．larger and more expensive
C．more difficult to use
D．to work more slowly
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