图书室有78本书,借走8本,还剩多少本书?-z;r({1P0L)[9~0J
算式:提示4o)X(R-k0m,K-z;r({1P0L)[9~0J
口答:还剩-~;{0P1o;d)n:V8a:G3E8h3t本书。-z;r({1P0L)[9~0J