somedoctorshavemadea的精選

問題詳情：Afternumerousexperiments, somedoctorshavemadea________inthetreatmentofcancer.A．breakdown B．break­up C．breakthrough D．breakout【回答】C知識點：名詞題型：選擇題...

問題詳情： Afternumerousexperiments,somedoctorshavemadea_____inthetreatmentofcancer.A.breakdown        B.breakupC.breakthrough      D.breakout【回答】C知識點：名詞題型：選擇題...