单项选择题

A．Vera Schlakman and Stanley Buder are authors.
B．Vera Schlakman and Stanley Buder are investors.
C．Vera Schlakman and Stanley Buder are social workers.
D．Vera Schlakman and Stanley Buder are factory workers.
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单项选择题
A．Less than one year.B．Four years.C．Five years.D．Ten years.
A．Less than one year.
B．Four years.
C．Five years.
D．Ten years.
单项选择题
A．Every person in thirty people has one.B．Exactly 105,000 people have car phones.C．There is one in every 30 cars.D．Every car in the State of Florida has one.
A．Every person in thirty people has one.
B．Exactly 105,000 people have car phones.
C．There is one in every 30 cars.
D．Every car in the State of Florida has one.
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