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单项选择题

A．Because he wants to collect information about the shoppers.
B．Because people in the shopping mall have time to answer his questions.
C．Because people in the shopping mall are more experienced than students.
D．Because he can find various respondents in the shopping mall.
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单项选择题A．To inform the job hunters of the opportunities available.B．To help design classified ads in the newspaper.C．To classify available jobs into various categories.D．To help job hunters write impressive application letters.

A．To inform the job hunters of the opportunities available.
B．To help design classified ads in the newspaper.
C．To classify available jobs into various categories.
D．To help job hunters write impressive application letters.

单项选择题A．Because students need individual attention.B．Because students need to be stimulated.C．Because students need exactly the same instruction.D．Because students don’t know how to learn.

A．Because students need individual attention.
B．Because students need to be stimulated.
C．Because students need exactly the same instruction.
D．Because students don’t know how to learn.