题目

The Museum of Childhood is Australia’s most comprehensive collection of childhood items including toys, dolls, infant and school material.      Housed in a modern facility（设施）, the displays reflect Australian childhood experience over time including play, child rearing(=raising),orphanage(孤儿院)childhood and home, school and war time experience.      There are many hands-on exhibits and education sessions including the famous” lesson” in the 1920s One Teacher Bush Classroom.      The Museum also hosts national touring exhibitions and conducts special activities on关于电话的工作过程，下列说法中不正确的是（ ）A．话筒是利用电磁感应现象，把机械能转化为电能B．听筒是利用通电导体在磁场中受力而振动，把电能转化为机械能C．话筒是把声信息直接传递到听筒引起听觉的反应D．听筒是把电信息还原成声信息