题目

短文填空  根据短文内容及首字母提示, 补全空格内单词, 使短文完整、通顺（ My 14-year-old brother John and I saw the coat at the same time. The thick black woolen coat was soft, and it cost only ＄28. We looked at each other, saying n  96  , but John’s face was shining with joy. Dark woolen coats were p   97    with boys just then, and could cost several hundred dollars. But this coat was even better and m   98    cheaper. John t   99   on the coat and bought it at once. John wore the coat to school the next day and came home with a big sm12、为了适应南通经济快速发展的形势以及铁路运输和客流量大幅上升的需要，南通火车站扩建工程共投资73 150 000元．将73 150 000用科学记数法表示为7.315×107．