题目内容:
Questions19to22arebasedonthepassageyouhavejustheard. A.Forhelpingpeopledevelopgoodcleaninghabits.
B.Forcollectinginformationofantibacterialcleansers.
C.Formakingknownofanewimportedproduct.
D.Forhelpingpeoplemaketheirpurchasedecisions.
参考答案:
答案解析: