Medicalresearchhasshownthatthewide

发布时间：2020-07-26 04:49:14

Medical research has shown that the widespread use of cigarettes ________ the increase of cancers．A.results fromB.contributes toC.devotes toD.donates to

网友回答

B
以上问题属网友观点，不代表本站立场，仅供参考！