题型:解答题 The Big Nose Club now has 330 members, each of ______ has a nose at least 60mm long or 40mm wide.[ ]A. whomB. whoC. whichD. them 查看答案
题型:解答题 关于麻疹的叙述,不正确的是( )。A.病人是惟一传染源B.只通过呼吸道传染C.凡未患过麻疹或未接种过麻疹疫苗者为易感者D.感染后可终身免疫E.潜伏期末2~3天至出疹后5天有传染性 查看答案