下列现象中属于化学变化的是(  )                     

下列现象中属于化学变化的是(  )                                             

 A、 活性炭吸附有色、有毒的气体

B、 铅笔把字迹留在纸上

C、 用金刚石切割玻璃

D、 石墨在空气中燃烧

答案

D

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