题目

—— students have graduated from this school in the last twenty years .A.Tens of
______students have graduated from this school in the last twenty years .
A.Tens of thousands of B.Tens upon thousands of
C.Tens in thousands D.Tens thousands of
请说明单选答案的原因,

提问时间：2020-08-03

答案

选择A
这种成百上千 成千上万之类的表达方式,请记住,前后两个基数词都要是复数形式
thes of thousands of
还有疑问请说,