ThismedicinediscoveredbyTuYouyou 国语站 题库 2.04W 大中小设置文字大小 问题详情:This medicine discovered by Tu Youyou ________ many people’s lives since it was put into use.A. is saving B. will save C. has saved D. had saved【回答】C【解析】句意:屠呦呦发现的这种*自从投入使用以来,已经挽救了许多人的生命。since引导的时间状语从句用一般现在时,故为has saved,故选C。知识点:动词时态题型:选择题 TAG标签:#