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Watch Later 5:12

S2_SCI_9.5 _使用酸和鹼時的潛在危險

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S2_SCI_9.4.3 _Acid rain

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S2_SCI_9.4.3 _酸雨

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S2_SCI_9.4.2 _ Effect of acid on building materials

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S2_SCI_9.4.2 _酸與建築材料的影響

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S2_SCI_9.4.1 _Effect of acid on metals

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S2_SCI_9.4.1 _酸與金屬的影響

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F3.先破後立padlet分組回饋(《不求甚解》)

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F3《孔明借箭》

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