单项选择题

A．Study a weather map.
B．Visit a weather station.
C．Watch a weather report.
D．Go to a storm shelter.
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单项选择题
A．Bone structure.B．Smell ability.C．Birth mode.D．Recover ability against disease.
A．Bone structure.
B．Smell ability.
C．Birth mode.
D．Recover ability against disease.
单项选择题
A．By using satellite images, maps, etc.B．By studying specific arming methods.C．By studying the variation of human population.D．By analyzing the quality of crops.
A．By using satellite images, maps, etc.
B．By studying specific arming methods.
C．By studying the variation of human population.
D．By analyzing the quality of crops.
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