By careful examination, the doctors hope to ____ the source of the infection.( )(本题2.0分) A、 make sure B、 set off C、 get up D、 track down

By careful examination, the doctors hope to ____ the source of the infection.( )(本题2.0分)
A、 make sure
B、 set off
C、 get up
D、 track down

出自：河南科技大学-大学英语

提示：
每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10253414】个 (题库试题定时更新)