单项选择题

A．To estimate the extreme weather.
B．To develop the satellite technology.
C．To improve agricultural output.
D．To learn how to change information to maps more efficiently.
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单项选择题
A．She doesn’t like picnic.B．It will be too hot.C．She will have an exam next week.D．The biology class will go to the beach next week.
A．She doesn’t like picnic.
B．It will be too hot.
C．She will have an exam next week.
D．The biology class will go to the beach next week.
单项选择题
A．Soil.B．Human population.C．Forest.D．Water.
A．Soil.
B．Human population.
C．Forest.
D．Water.
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