somedoctorshavemadea的精选

问题详情：Afternumerousexperiments, somedoctorshavemadea________inthetreatmentofcancer.A．breakdown B．break­up C．breakthrough D．breakout【回答】C知识点：名词题型：选择题...

问题详情： Afternumerousexperiments,somedoctorshavemadea_____inthetreatmentofcancer.A.breakdown        B.breakupC.breakthrough      D.breakout【回答】C知识点：名词题型：选择题...