Asurvey_______in2002bytheComputerSecurityInstituteaprivateorganizationintheUSAshowedthat90percentofthe503biggestcompaniesandgovernmentdepartmentsquestioned_______theirsecuritysystems_______intointhepreviousyear.
A.conducted;had;broke B.conducted;hadhad;broken
C.wasconducted;hadhad;broken D.tobeconducted;had;broke
邮箱:联系方式: