Weoftenpraisetheworldofscience．Itexplainstheworldandmakesourliveseasierwithtechnology．Oneofthemostexcitingfieldsinscienceisartificialintelligence（人工智能AI）．Thisisanareawherescientistsareworkingoncr

　　Weoftenpraisetheworldofscience．

　　Itexplainstheworldandmakesourliveseasierwithtechnology．Oneofthemostexcitingfieldsinscienceisartificialintelligence （人工智能 AI）．Thisisanareawherescientistsareworkingoncreatingmachinesthatthinklikehumans．

　　However，oneofthemostfamousscientistshasaverydarkwarningforusaboutthistypeoftechnology．

　　"Thedevelopmentofartificialintelligencecouldspelltheendofthehumanrace，"saidProfessorStephenHawkingtotheBBC．

　　Hawkingisawell-knownBritishscientistandwriterofbestsellingsciencebookABriefHistoryofTime．Thiswarningcameafterheusedthemachineparticularlymadeforhim．AsHawkingsuffersfromaseriousdiseasecalledALS，heneedsanAIcomputertocommunicate．ThecomputerlearnshowHawkingthinksandsuggeststhewordshemaywanttousenext．

　　This isabasictypeofAI，whichisveryuseful，yetHawkingisfrightenedofthepossibilityofcreatingtechnologythatcanmatchorsurpasshumanintelligence．Andit'seasytoimaginehowterriblethingsmaybe．ManyTVshowsandfilmsdisplaybig，killermachinesthatarefarclevererthanus．"Humanscan'tcompetebecausetheyarelimitedbyslowbiologicalevolution （生物进化），"saidHawking．

　　InwhatdirectiondoyouthinkAIisheading？Shouldwebehopefulorfearful？

　　42．Accordingthepassage，AImachinescan___nowadays．

　　A．makeourliveseasier

　　B．thinklikehumanbeings

　　C．bemuchsmarterthanhumansnow

　　D．notbecontrolledbyhumanbeingssoon

　　43．Whatdoestheunderlinedword This standforinparagraph5？___

　　A．Abig，killermachine．

　　B．AseriousdiseasecalledALS．

　　C．TheAIcomputerHawinguses．

　　D．TheAItechnologyscientistsworkon．

　　44．ThewritertookHawkingasanexampleto___．

　　A．explainhowAIhashelpedus

　　B．showthegreathiddenuseofAI

　　C．showAIhasalreadybecomepartofourlife

　　D．suggestthatAImightbecomedangerousforhumans

　　45．Whichofthefollowingcanbethetitleforthisarticle？___

　　A．ThedevelopmentofAI

　　B．AI：afriendoranenemy？

　　C．Thefutureofhuma