About10,000yearsago,theworld'spop

发布时间:2020-07-26 00:44:00

About 10, 000 years ago, the world's population ________ very small.A.has beenB.areC.wereD.was

网友回答

D
以上问题属网友观点,不代表本站立场,仅供参考!