题目内容:
Whathashappenedtoaspirinsincenewpainkillerscameonthemarket?
A.Companieshavestoppedsellingit. B.Ithasbecomethebest-sellingpainkiller.
C.Itsnewusehasbeendiscovered.
D.Doctorshavesoldittopatients.
参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析: