A:are; ever since
B:are; of all time
C:is; ever since
D:is; of all time
湖北云梦出土的秦简记载,时有甲、乙两人到官府告发丙、丁二人私铸钱币,并呈上新钱一百一十个和铸钱所用的模具两套。这一案件说明当时( )
-0.25的倒数是( )