题目内容
89,91,94,88,93,91,89,87,92,86,90,92,88,90,91,86,89,92,95,88.则它们的和是( )
A.1789 B.1799
C.1879 D.1801
给出20个数:求89,91,94,88,93,91,89,87,92,86,90,92,88,90,91,86,89,92,95,88的和.