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来源:学生作业帮助网 编辑:作业帮 时间:2024/06/09 23:04:19
名人的发明与发现
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爱迪生发明了灯泡,瓦特发明了蒸气机,居里夫人发现了镭,莱特兄弟发明了飞机, 中国有四大发明等等.
晒得就好了喜欢提高
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