题目

--I don’t know             . --Why not go this Sunday？      A. how to go to the museum           B. why to go to the museum   C. where to go to the museum 答案：C如图所示，将铁钉放在某矿石附近，铁钉立即被吸引到矿石上，此现象说明该矿石具有（ ）A．磁性B．导电性C．弹性D．绝缘性