单项选择题

A．Navigation.
B．Drainage.
C．Irrigation.
D．Electricity.
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单项选择题
A．Keeping her topic focused and supporting her opinions with facts.B．Reading extensively and collecting as much reference as possible.C．Avoiding sensitive political points and seeking more power.D．Having discussions with employees and giving them more freedom.
A．Keeping her topic focused and supporting her opinions with facts.
B．Reading extensively and collecting as much reference as possible.
C．Avoiding sensitive political points and seeking more power.
D．Having discussions with employees and giving them more freedom.
单项选择题
A．Planting crops.B．Clearing new land.C．Building houses.D．Caring for animals.
A．Planting crops.
B．Clearing new land.
C．Building houses.
D．Caring for animals.
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