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Thomas Edison tried two thousand different materials in search of a filament for the light bulb. When none worked satisfactorily, his assistant complained, “All our work is in vain. We have learned nothing.”
Edison replied very confidently, “Oh, we have come a long way and we have learned a lot. We know that there are two thousand elements which we cannot use to make a good light bulb.”
(Adapted from academictips.org)
The sentence “We have learned nothing”, in the text, can be replaced by
Outras questões do mesmo concurso: EEAR / CFS (EEAR) / 2015 / Aeronavegantes e Não-Aeronavegantes
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