题目

阅读短文，并按要求完成下列小题。The aims of the students who come to school is to study. But to study requires a right way, or you waste either time or the money. The following are the ways of studying.The best time for reading is morning. Because in the morning, the air is fresh and our minds are clear. For that reason, we can get good results.In studying we must be patient. If we don't understand a text well, we must read it again. We should not read the next one till we have learned the first one well.When we are studying, we must put our hearts into the book. We can not rea 　　 　　 15×15=225 　　 　　 34×36=1224 　　 　　 25×25=625 　　 　　 33×37=1221 　　 　　 35×35=1225 　　 　　 32×38=1216 　　 　　 45×45=2025 　　 　　 31×39=1209 　 28×22=(　　)