单项选择题

A．All software packages are made by the same software company.
B．The users are familiar with all kinds of software packages.
C．There are some standards to which all software writers adhere.
D．There is a committe which examines all software packages.
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单项选择题
A．On low shelves.B．On high shelves.C．Spread all over the store.D．In red plastic bags.
A．On low shelves.
B．On high shelves.
C．Spread all over the store.
D．In red plastic bags.
单项选择题
A．Some people have a low self-image.B．There is always someone around who knows better.C．Salesman talk people into buying things they don’t want.D．People do not share the common knowledge.
A．Some people have a low self-image.
B．There is always someone around who knows better.
C．Salesman talk people into buying things they don’t want.
D．People do not share the common knowledge.
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