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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单项选择题
Which of the following statements is TRUE
A．Scientists at the Princeton University want to find that distant planets are like our Earth.
B．Among all the terrestrial planets Earth's light curve is the most complicated.
C．Spectral study of the light will see no development of itself because it is static.
D．Spectral reading is used as a supplementary method to the study of the change in light over tim
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
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