79. _________ through a telescope, Venus appears to go through changes in size and shape.
(A)It is seen
(B) Seeing
(C) When seen
(D)It has seen
詳解 (共 6 筆)
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副詞子句簡化成分詞構句原句為 When ...
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副詞子句簡化成分詞構句,而Venus為主...
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當通過望遠鏡觀察時,金星似乎經歷了尺寸和...
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推薦分詞構句的解釋https://eng...