edison invent the electric light 还是edison invented the elect

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edison invent the electric light 还是edison invented the electric light
时态是用现在时好呢还是过去式呢,答案给的是过去式,但是爱迪生发明电灯不可以看成是客观事实吗
追问英语中说客观真理用一般现在时,客观真理包括哪些?
还有food contained protein,fat,fibre,sugar and salt中为什么要用过去式呢

建议使用过去时态"invented",因为它确实在很久以前就已经发明了电灯.
另一个问题句子,不应该使用过去式,因为“食物”含有蛋白质,脂肪,纤维素,糖和盐是常态,建议用法是："food contain protein,fat,fibre,sugar and salt"
如果你觉得答案是好的,请给一些好评或鼓励,谢谢!
再问：但爱迪生在很久以前发明的电灯就不是客观事实吗
再答：但爱迪生确实是在很久以前就已经发明了电灯的，所以建议使用过去时态"invented"，谢谢!!

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