单项选择题

A．Improvements in farm machinery in the United States.
B．Farmers’ loss of independence.
C．Jefferson’s views about commercialized agriculture.
D．International trade in the nineteenth century.
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单项选择题
A．During economics class.B．Before economics class.C．In about an hour.D．The next day.
A．During economics class.
B．Before economics class.
C．In about an hour.
D．The next day.
单项选择题
A．He was confused about the date of the appointment.B．He’s glad he called the doctor.C．He can’t come until 4:15.D．He feels happy that he can change the appointment.
A．He was confused about the date of the appointment.
B．He’s glad he called the doctor.
C．He can’t come until 4:15.
D．He feels happy that he can change the appointment.
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