单项选择题

A．Replacing the native corn with the hybrid corn.
B．Replacing the hybrid corn with the native corn.
C．Replacing the new type of corn with the traditional corn.
D．Replacing the traditional corn with the native corn.
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单项选择题
A．To talk with her roommate.B．To talk with the noise maker.C．To talk with the dorm supervisor.D．To talk with all the students in the dorm.
A．To talk with her roommate.
B．To talk with the noise maker.
C．To talk with the dorm supervisor.
D．To talk with all the students in the dorm.
单项选择题
A．Watch her partner.B．Play her cards in cooperation with her partner.C．Quit the game.D．Teach the man how to play bridge.
A．Watch her partner.
B．Play her cards in cooperation with her partner.
C．Quit the game.
D．Teach the man how to play bridge.
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