安徽自考网> 试题题库列表页> SaltSalt is a remarkable (remark) thing. It is a basic element in the diet of humans. It is also necessary for__ 41() (animal) and plants. It is one of the most_ 42() (effect) and most widely used of all food preservatives (防腐剂). Its industrial,_ 43() (medicine) and other uses are almost countless. In fact, salt has been a(n)_ 44()(importance) element of life. It also has been the subject of many stories. It is 45()(frequent) mentioned in fairy tales. Some cultures give magical power to salt. In the past, salt_ 46()(serve) as money at various times and 47()(place). Salt has been the cause of bitter wars. In many cultures,_ 48()(offer) bread and salt to visitors is a_ 49()(tradition) sign of welcome. Salt-making_ 50()(cover) much of the history of Europe since Roman times.