Betterthinktwicebeforechoosinga password fore-mail，onlinebankorshopping．Simplepasswordsareeasytobestolen．
Apasswordislikeakeytoyourhome．Ifsomeonestealsit，he’llgetchancestostealsomethingelse．Weusepasswordseverywhereinourlife．Wearesousedtopasswordsthatwedon’tpayanyattentiontothemuntilweloseorforgetone．
Astudyof28，000passwordsrecentlystolenfromapopularwebsiteshowedthatpeopleoftendotheeasything．Itfoundthat16percenttookafirstnameasapassword．Another14percentusedtheeasiestkeyboardcombinationssuchas“12345678”orQWERTY．Fivepercentofthestolenpasswordswerenamesoftelevisionshowsorstarspopularwithyoungpeople．Threepercentofthepasswordsexpressedfeelingslike“Idon’tcare，”“Whatever，”“Iloveyou，”ortheiropposite，“Ihateyou．”
RobertGraham，whodidthestudy，advisespeopletochooseapasswordthatislongerthaneightcharacterswithonecapitalletter（大写字母） andonesymbol．
Ofcourse，safepasswordsdon’tmeanthosehardtoremember．Forgettingyourpasswordissometimesabigheadacheforyou．Maybe，theperfectpasswordiseasyforyouandhardforothers．
48．Theunderlinedword“password”inParagraph1means___．
A．标志 B．护照 C．密码 D．口诀
49．About40% passwordsareeasilystolenbecausetheusersare___．
A．busy B．lazy C．stupid D．careful
50．Whichofthefollowingpasswordsisconsideredthesafest？___
A．ZXCVBN． B．password56． C．wy64#0Mv． D．Ihateyou．