题目

 If you had studied hard at that time, you ____________ a university student now. A. would have been               B. would be      C. are                           D. be 答案：B加法、减法、乘法和除法统称为 ．在没有括号的算式里，如果既有乘除法，又有加减法，要先算 ，再算 ．