![Wedonotknowwhenmanfirstbegantousesalt,butwedoknowthatit...]( "Wedonotknowwhenmanfirstbegantousesalt,butwedoknowthatit...")
- 问题详情：Wedonotknowwhenmanfirstbegantousesalt,butwedoknowthatithasbeenusedinmanydifferentwaysthroughouthistory.Historicalevidenceshows,forexample,thatpeoplewholivedover3,000yearsagoatesaltedfish.ThousandsofyearsagoinEgypt,saltwasusedtopreservethedead...
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