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單項選擇題

Planetary aberration is due，in part，to（）.

A.refraction of light as it enters the Earth's atmosphere
B.rotation of the Earth on it's axis
C.the body's orbital motion during the time required for its light to reach Earth
D.a false horizon

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單項選擇題

Perihelion is the point where the Sun（）.

A.is nearest to the Earth
B.is farthest from the Earth
C.is on the opposite side of the Earth from the Moon
D.and Moon and Earth are in line

單項選擇題

Other than the Sun and Moon，the brightest object in the sky is（）.

A.Sirius
B.Canopus
C.Venus
D.Jupiter

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Planetary aberration is due，in part，to（）.

你可能感興趣的試題

Perihelion is the point where the Sun（）.

Other than the Sun and Moon，the brightest object in the sky is（）.

Planetary aberration is due，in part，to（）.

Other than the Sun and Moon，the brightest object in the sky is（）.