七年级英语演讲稿参考范文七班级英语演讲稿参考篇一：七班级英语演讲稿advanced calculationheres an interesting mathematical equation that someone sent me the other day:pick up a calculator and consecutively enter the numbers of your birthday.add 754.subtract 753.add 1.now, divide this number by yesterdays date and add 59 to the total.subtract 59.add the number of fingers on your right hand.subtract the number of toes on your left foot.divide this by any numbe
