Important inventions 2
1Professor Stewart is an inventor.
TrueFalse
2He tells the interviewer his choice of the five most important inventions.
3A lot of people chose the wheel and tools.
4The printing press was very popular.
5The flush toilet has had a great impact on public health.
6Electricity and the light bulb are completely different inventions.
7The top two inventions are penicillin and the internet.
8Professor Stewart thinks fire and language are very useful inventions.
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