【简答题】Three Things to do Before You Are 18 Here are some things you should try before you are 18 for agers. (青少年) Learn to swim It is important for us, because it can save our lives. If you can’t swim w...
【多选题】下列平均指标中属于位置平均数的有( )。
【多选题】下列指标中,属于位置平均数的指标有()。
【简答题】If you draw your money before it is due,you will have to