Theachievementsofthe&n

发布时间：2020-07-11 15:04:24

The achievements of the greatest minds in science could never have been reached________ the patient work of hundreds of others．













A.were it not for












B.had it not been because











C.had it not been for











D.if it had not been

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！