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A few months ago，government officials of Singapore did somet......

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单项选择题
Earth would put on a little show means: as it spins, ______.
A．Earth is a more active planet than Venus and Mars
B．Earth reflects a brighter light curve than Venus and Mars
C．Earth shows oceans, deserts, forests and clouds, while Venus and Mars don't
D．Earth reflects sunlight in an ebb-and-flow manner
单项选择题
Spectral reading of the light reflected by an Earth-like planet ______.
A．can tell us the components of that planet's atmosphere
B．can locate oceans and forests on that planet
C．can show what the weather on that planet is like
D．is the quickest way to study its light curve
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