pollution/ p lu:n/ n.污染pond/ pnd/ n.池塘
pool/ pu:l/ n.水塘，游泳池，水池pool/ pu:l/ n.共用物vt.共有poor/ pu/ a.贫穷的;贫乏的pop/ pp/ n.流行音乐，流行歌曲pop/ pp/ n.评的一声，爆破声popular/ ppjul/ a.民众的;流行的population/ ppju lein/ n.人口;全体居民pork/ p:k/ n.猪肉
port/ p:t/ n.港，港口
portable/ p:tbl/ a.轻便的;手提的porter/ p:t/ n.搬运工人
portion/ p:n/ n.一部分;一分portrait/ p:trit/ n.消像，画像
position/ p zin/ n.位置;职位;姿势positive/ pztiv/ a.确定的;积极的possess/ p zes/ vt.占用，拥有(财产)possession/ p zen/ n.有，所有;占有物possibility/ ps biliti/ n.可能;可能的事possible/ psbl/ a.可能的;可能存在的

position/ p zin/ n.位置;职位;姿势positive/ pztiv/ a.确定的;积极的possess/ p zes/ vt.占用，拥有(财产)possession/ p zen/ n.有，所有;占有物possibility/ ps biliti/ n.可能;可能的事possible/ psbl/ a.可能的;可能存在的possibly/ psbli/ ad.可能地;也许post/ pust/ n.柱，桩，杆 vt.贴出post/ pust/ n.邮政，邮寄;邮件post/ pust/ n.岗位，哨所;职位postage/ pustid/ n.邮费，邮资postman/ pustmn/ n.邮递员
postpone/ pust pun/ vt.延迟，推迟，延缓pot/ pt/ n.锅，壶，罐，盆
potato/ pu teitu/ n.马铃薯，土豆potential/ p tenl/ a.潜在的n.潜力pound/ paund/ n.磅;英磅
pound/ paund/ vt.捣碎;舂烂;猛击pour/ p:/ vt.灌，倒vi.倾泻
poverty/ pvti/ n.贫穷，贫困
powder/ paud/ n.粉末;药粉;火药
position/ p zin/ n.位置;职位;姿势positive/ pztiv/ a.确定的;积极的possess/ p zes/ vt.占用，拥有(财产)possession/ p zen/ n.有，所有;占有物possibility/ ps biliti/ n.可能;可能的事possible/ psbl/ a.可能的;可能存在的possibly/ psbli/ ad.可能地;也许post/ pust/ n.柱，桩，杆 vt.贴出post/ pust/ n.邮政，邮寄;邮件post/ pust/ n.岗位，哨所;职位postage/ pustid/ n.邮费，邮资postman/ pustmn/ n.邮递员
postpone/ pust pun/ vt.延迟，推迟，延缓pot/ pt/ n.锅，壶，罐，盆
potato/ pu teitu/ n.马铃薯，土豆potential/ p tenl/ a.潜在的n.潜力pound/ paund/ n.磅;英磅
pound/ paund/ vt.捣碎;舂烂;猛击pour/ p:/ vt.灌，倒vi.倾泻
poverty/ pvti/ n.贫穷，贫困
powder/ paud/ n.粉末;药粉;火药

　A)It is a website that sends messages to targeted users.
　　B)It makes money by putting on advertisements.
　　C)It profits by selling its users’ personal data.
　　D)It provides loads of information to its users.
　　63.What does the author say about most Facebook users?
　　A)They are reluctant to give up their personal information.
　　B)They don’t know their personal data enriches Facebook.
　　C)They don’t identify themselves when using the website.
　　D)They care very little about their personal information.
　　64.Why does Facebook make changes to its rules according to Elliot Schrage?
　　A)To render better service to its users.
　　B)To conform to the Federal guidelines.
　　C)To improve its users’ connectivity.
　　D)To expand its scope of business.
　　65.Why does Senator Charles Schumer advocate?
　　A)Setting guidelines for advertising on websites.
　　B)Banning the sharing of users’ personal information.
　　C)Formulating regulations for social-networking sites.
　　D)Removing ads from all social-networking sites.
　　66.Why does the author plan to cancel his Facebook account?
　　A)He is dissatisfied with its current service.
　　B)He finds many of its users untrustworthy.
　　C)He doesn’t want his personal data abused.
　　D)He is upset by its frequent rule changes.