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1、七选五专练版权所有，侵权必究。七选五专练根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。AWhatistheE-mail?__71__Youcansendmessagesinonlyafewsecondsbyemail.OntheInternettherearemanypowerfulcomputerscalled“servers”tohelppeoplesendandreceiveemails.__72__Ifyouwanttousetheemailservice,y
2、ouhavetoopenatleastanemailaccountcalleda“mailbox”,justlikewesetupamailboxinapostoffice.SomemailboxesareprovidedfreeofchargebyISPs,whichyoucangetwhenyouopenanInternetaccount.__73__FirstyouhavetoconnecttotheInternetandgotothehomepageoftheISPprovidingfreema
3、ilboxes.Thenyou’llfindanicon（符号）showing“applyforafreemailbox”.Clicktheicon,andanagreementabouttherulesforusingthefreemailboxwillappear.__74__Thenyouhavetofillinaformaboutyourbasicpersonalinformation,andthenameandpinofthemailbox.Afterfinishingthese,youwil
4、lgetamailboxlikethis:yourname@mailserver,forexample:jack@163.com.Themailboxisseparatedintotwopartsbyaseparator“@”,whichisreadas“at”.Theformerpartisthenameofthemailbox.Thelatteristhedomainname（域名）ofthemailserver.Allmailstoyouwillbereceivedbytheserverandpu
5、tintoyourmailbox.__75__.A.Howtoapplyforafreemailbox?B.Youcanreadthismailonanycomputerintheworldaslongasyouhavethenameandpinofthemailbox.C.E-mailisverypopulartoday.D.Thee-mail,whichisalsocalledemail,standsfor“electronicmail”.E.Thesendingandreceivingserver
6、sarejustlikepostoffices.F.Ifyouwanttogoon,clicktheicon“Iagree”.G.WherecanyoufindanE-mail?BToemigratemeanstomovetoanothercountryandstartanewlife.71Also,itisthesurestwaytochangeaman’slifecompletely.Nowadays,emigrationisespeciallyimportanttoscientistsandpeo
7、plepossessinguniqueskillsandtalents.72Also,emigrationmightbeyouranswertoallthedifficultquestionslifebroughttoyou.And,ofcourse,ifyouareascientistwithaPH.D.degreeandyourcountrydoesnotbelieveyourresearchtodeserveadequatefunding,emigrationmaybeyouronlywaytoc
8、ontinueprofessionalactivities.73Europeanfinestprofessionals,talentedscientists,engineers,inventors,doctors,writers,musicians,actors,artists,athletesbeganmovingtotheUSsoonaftertheendoftheWorldWarII.74TheUnitedStatesisstilla
