45. Why is Uranus important to scientists?
(A) It is one of the most common types of planets in the
galaxy.
(B) It has never been visited by spacecraft before.
(C) It has many moons.
(D) It is an abundant source of precious minerals and fossil
fuels.
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45. 為什麼天王星對科學家很重要？(A...
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But beyond a handfu...
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(A) 第四段 One big draw...
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