相关DoyouknowinsuranceBu的文学知识

问题详情：  Doyouknowinsurance?Buyinginsuranceisa  41 bywhichpeoplecanprotectthemselves  42 largelosses.Protectionagainstfireisonekindofinsurance.Largenumberofpeoplepay__43___sumsofmoneytoaninsu...