sdiscoveryhashad的精选

问题详情： --Thedoctor’sdiscoveryhashad__profoundeffectonmankind.--Soithas.Ithasmade__greatdifferencetoourlifespan.A.the;a  B.the;the  C.a;a  D.a;the【回答】C知识点：冠词题型：选择题...