完形填空

　　We do not know when man first began to use salt, but we do know that it has been used throughout history．Historical fact 　　1　　, for example, that people over 3, 000 years ago 　　2　　 salted fish．Thousands of years ago in Egypt, people used salt to prevent(防止)the 　　3　　 going 　　4　　．

　　People also thought stealing(偷窃)salt was a 　　5　　 crime(罪行)during some periods of history．In the 18th 　　6　　, for example, if a person stole salt, people would send him to 　　7　　 after they caught him．About 150 years 　　8　　, in the year 1553, taking 　　9　　 salt than others would be punished(受到惩罚)．People would 　　10　　 the prisoner’s ear．