Although medical science________ control over several dangerous diseases, what worries us is that some of them are returning.
A.achieved | B.has achieved |
C.will achieve | D.had achieved |
相关知识点
推荐套卷
Although medical science________ control over several dangerous diseases, what worries us is that some of them are returning.
A.achieved | B.has achieved |
C.will achieve | D.had achieved |