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M7U31.havepositive/negativeeffectsonsth对..有积极/消极的影响2.thatistosay=inotherwords=inanotherword也就是说,换言之3.beaccustomedto(doing=beusedto习惯于4.presentsthtosb=presentsbwithsth将某物赠予交给某人bepresentat出席beabsentfrom缺席atpresent现在forthepresent暂时,目前allthestudentspresent所有在场的学生5.keep…inmind=bear..inmind记住，牢记6.beeagertodo热切想做某事beeagerfor=longfor=diefor=beanxiousabout想得到,盼望7.beequalto等于,相当于8.inneedof需要9.consultadictionary=turntoadictionary=refertoadictionary=lookupwordsinadictionary查字典10.feeldisconnectedfrom与---切断联系11.weatherforecasts天气预报12.currentaffairs时事新闻13.academicresearch学术研究、14.turntosb（forhelp）向某人求助15.acquireknowledgefrom从—获取知识16.communicatewithsbonsth在某方面和某人交流17.allsortsoftopics各种话题18.searchforanswerstoquestions寻找问题的答案19.handletheproblems=dealwithproblems处理问题20.advanceknowledge增加知识advancedtechnique先进的技术21.be/becomeaddictedtodoing沉溺于,对..上瘾22.addressthemeeting/thestudents向..演讲addresssb.assth=callsb.sth称呼addresssthtosb给..写地址寄给某人23.gatherinformation收集信息24.bebasedon以—为基础25.ratherthan而不是accesstosth得到某物通往某地的通道26.be/getinvolvedin=participatein=takepartin涉及，卷入27.handinpapers上交论文28.affectpeople’sprivatelives影响人们的私生活29.gainpopularity得到普及bepopularwith/among受…欢迎30.limittheuseof限制---的使用31.asageneralrule一般情况下ingeneral=generallyspeaking32.formlifelongfriendship形成一生的友谊33.buildsocialties建立社会联系34.atanInternetcafe在网吧35.inanintelligentmanner以一种明智方式36.sitdownatacomputerterminal坐在电脑前37.aidsbin/withsth在……上援助某人aidsbtodosth帮助某人做38.searchengine搜索引擎39.typein输入40.subjectdirectory主题目录检索41.comb(throughsth彻底搜寻…42.bedividedinto…被分成……43.bebasedonthekey根据关键词44.onthe/abasisof…以……