相关AIDSresearcherssayth的文学知识

问题详情：AIDSresearcherssaytheystillhavemuchworktodoonavaccine(疫苗)againstHIV.Butthefirstreportsofsomesuccesshaveraisedhopes.   1  Thestudywasdesignedtotestfortwoabilities.Onewastheabilityoftheva...