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16. Even at low levels, ______ A) the nervous system has produced detrimental effects by lead. B) lead’s detrimental effects are producing the nervous system. C) lead produces detrimental effects on the nervous system. D) the detrimental effects produced by lead on the nervous system.

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1F
羅逸昇 大一上 (2014/05/19)
lead 這裡指的是鉛


16. Even at low levels, ______ A) the n..-阿摩線上測驗