阿摩線上測驗
21. What is the passage mainly about?
(A) Space X the technology company
(B) Satellites and their contribution to communication
(C) The problems with too many satellites in space
(D) What satellite constellations really are
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統計： A(127), B(291), C(458), D(158), E(0) #3032269
統計： A(127), B(291), C(458), D(158), E(0) #3032269
詳解 (共 3 筆)
覚
#5674019
satellite constellations衛星星座
astronomer 天文學家
astronomer 天文學家
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