单项选择题

A．Bone structure.
B．Smell ability.
C．Birth mode.
D．Recovery ability against disease.
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单项选择题
A．By good sense of water waves made by quarries.B．By good sense of smell and electrical and magnetic power.C．By good sense of light.D．By good sense of blood.
A．By good sense of water waves made by quarries.
B．By good sense of smell and electrical and magnetic power.
C．By good sense of light.
D．By good sense of blood.
单项选择题
A．To acquire information from satellites more efficiently.B．To realize full coverage of area the satellite passes overC．To build more ground observation centers.D．To compare satellite information with those from ground.
A．To acquire information from satellites more efficiently.
B．To realize full coverage of area the satellite passes over
C．To build more ground observation centers.
D．To compare satellite information with those from ground.
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