单选题As observed from the Earth，the angle between lines from the Earth to the Sun and the Earth to an inferior planet is known as（）.AelongationBconjunctionCoppositionDquadrature
单选题
As observed from the Earth，the angle between lines from the Earth to the Sun and the Earth to an inferior planet is known as（）.
A
elongation
B
conjunction
C
opposition
D
quadrature
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解析：
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