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F.2 I.S. 急!!
發問:
Air sacs are covered with fine blood vessels called (s). Oxygen is carried to all body cells by the flow of (t). FIND (s),(t)
最佳解答:
(s)= capillaries, (t)= blood. I hope I can help you la~ ADD OIL!
其他解答:
S = capillaries T = blood I am f.2 too XP
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