单项选择题

A．Because it is too difficult.
B．Because it is too easy.
C．Because it allows cheating.
D．Because it uses a limited question pool.
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单项选择题
A．A year of experience in land management.B．A high school diploma and minimum age of 18 years.C．A willingness to do physical labor.D．A commitment to work ten to twelve months out of the year.
A．A year of experience in land management.
B．A high school diploma and minimum age of 18 years.
C．A willingness to do physical labor.
D．A commitment to work ten to twelve months out of the year.
单项选择题
A．In 1990.B．In 1992.C．In 1994.D．In 1996.
A．In 1990.
B．In 1992.
C．In 1994.
D．In 1996.
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