——Can you tell me whom the play ______ in the 1990s?——Sorry, I don't know.
A:was written by
B:was written
C:is written
D:1s written by
①氯化钠②小苏打③生石灰④石灰石⑤碳酸钠
如图,在平面直角坐标系中,矩形OABC的顶点B坐标为(8,4),将矩形OABC绕点O逆时针旋转,使点B落在y轴上的点B′处,得到矩形OA′B′C′,OA′与BC相交于点D,则经过点D的反比例函数解析式是____ .