题目

某银行办储蓄业务：取出950元，存入500元，取出800元，存入1200元，取出1025元，存入2500元，取出200元，请你计算一下，银行的现款增加了多少？你能用有理数加减法表示出来吗？ 答案：–950+500+(-800)+1200+(-1025)+2500+(-200)=1225It is required that the students _____ mobile phones in their school, so seldom _____ them using one.A. should not use; you will seeB. mustn’t use; will you seeC. not use; you will seeD. not use; will you see