Przykładowa odpowiedź:

1. Humans achieved many great things thanks to science, research and experiments. Throughout the history, humans have invented machines, medicine, writing and explored as far as they could.

2. In my opinion, the greatest achievement of all time was the invention of writing. It allowed people to convey their thoughts more clearly and allowed their civilizations to be remembered. That's why we could achieve incredible things by learning from the other people's experiences, their discoveries and history.