Eminentphysicistsfromalloverthewor

发布时间：2020-07-27 13:43:23

Eminent physicists from all over the world came to the US to ________ the centennial (一百周年纪念) of Einstein's birth.A.congratulateB.observeC.celebrateD.participate

网友回答

C
以上问题属网友观点，不代表本站立场，仅供参考！