Hi，我也是高一学生。此题我刚做过。选B下面给你讲下mean的用法：mean to do 打算做某事mean doing sth 意味着干某事mean sb to do sth想让某人干某事be meant to do=be intended to do意在干某事你最好记下来。Do you understand?

6.mean to do 、intend to do 打算做mean doing 意味着