- 9 年前最佳解答
It depends. For example, someone who works in an office might think a briefcase is the
most useful invention while someone who is a garbage man could care less about
briefcases. It really depends on what you think.
Well if your thinking about kids inventions, I'd personally say the top 5 would be:
TV, computer, CD player, mobile phone, footballs.. or somthing like that. I hope that helped!