Why is Uranus important to scientists?
AIt is one of the most common types of planets in the galaxy.正確答案
BIt has never been visited by spacecraft before.
CIt has many moons.
DIt is an abundant source of precious minerals and fossil fuels.
答案與詳解
為什麼答案是 A
天王星與海王星屬於「冰巨行星」，天文學家在銀河系中發現的系外行星大多屬於此類，因此研究天王星有助於了解宇宙中最常見的行星類型。
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