读图回答问题:
(1)说出图1、图2发明的名称及发明者。
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(2)图1中的发明使人类进入什么时代? |
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(3)图1与图2两者有什么关系? |
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(4)这两项发明均是哪一事件的成果? |
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(5)通过上图,你从中得出了什么启示? |
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