0i/_0e+[:Z7u3X7k,]
（1）三、四年级分别捐书多少本？0i/_0e+[:Z7u3X7k,]
（2）二年级捐了512本书，35本包成一包。包了14包，还剩几本书？0i/_0e+[:Z7u3X7k,]
算式：提示'e.P6N0i/_0e+[:Z7u3X7k,]
答：三年级捐书7F*n+V2X/l5@0V8u:f3]*f:T本，四年级捐书+a0q/q8V0w2\0v5C/r)\/g-l7Z'k/p本，还剩(G8@;T本书。0i/_0e+[:Z7u3X7k,]