单项选择题

A．32.
B．36.
C．34.
D．38.
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单项选择题
A．$360.B．$540.C．$560.D．$160.
A．$360.
B．$540.
C．$560.
D．$160.
单项选择题
A．To improve the knowledge of farmers in science and technology.B．To improve the living conditions of farmers.C．To improve the knowledge of unskilled workers.D．To improve the living conditions of the farmers and workers.
A．To improve the knowledge of farmers in science and technology.
B．To improve the living conditions of farmers.
C．To improve the knowledge of unskilled workers.
D．To improve the living conditions of the farmers and workers.
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