单项选择题
During one synodic rotation，a body makes one complete turn relative to the（）.
A.Earth B.Sun C.stars D.vernal equinox
单项选择题 Diurnal aberration is due to（）.
单项选择题 Capella is found in what constellation? （）
单项选择题 Because the actual center of some planets may differ from the observed center，the navigator applies a correction known as the（）.
