There’snodoubtthatnanotechnologypromisessomuchforcivilization.However,allnewtechnologieshavetheirteethingproblems,Andwithnanotechnology,societyoftengetsthewrongideaaboutitscapabilities.Numerousscience-fictionbooksandmovieshaveraisedpeople’sfearsaboutnanotechnology---withscenariossuchasinsertinglittlenano-robotsintoyourbodythatmonitoreverythingyoudowithoutyourealizingit,orself-replicatingnano-robotsthateventuallytakeovertheworld. Sohowdowesafeguardsuchapotentiallypowerfultechnology?Somescientistsrecommendthatnano-particlesbetreatedasnewchemicalswithseparatesafetytestsandclearlabelling.Theybelievethatgreatercareshouldalsobetakenwithnano-particlesinlaboratoriesandfactories.Othershavecalledforawithdrawalofnewnanoproductssuchascosmeticsandatemporaryhalttomanykindsofnanotechresearch. ButasfarasI’mconcernedthere’saneedtoploughaheadwiththediscoveriesandapplicationsofnanotechnology.Ireallybelievethatmostscientistswouldwelcomeawaytoguardagainstunethicalusesofsuchtechnology.Wecan’tgoaroundthinkingthatallinnovationisbad.alladvancementisbad.Aswiththedebateaboutanynewtechnology.itishowyouuseitthat’simportant.Solet’slookatsomeofitspossibleuses. Thankstonanotechnology,therecouldbeamajorbreakthroughinthefieldoftransportationwiththeproductionofmoredurablemetals.Thesecouldbevirtuallyunbreakable,lighterandmuchmorepliableleadingtoplanesthatare50timeslighterthanatpresent.Thosesameimprovedcapabilitieswilldramaticallyreducethecostoftravelingintospacemakingitmoreaccessibletoordinarypeopleandopeningupatotallynewholidaydestination. Intermsoftechnology,thecomputerindustrywillbeabletoshrinkcomputerpartsdowntominutesizes.Weneednanotechnologyinordertocreateanewgenerationofcomputersthatwillworkevenfasterandwillhaveamilliontimesmorememorybutwillbeaboutthesizeofasugarcube.Nanotechnologycouldalsorevolutionisethewaythatwegeneratepower.Thecostofsolarcellswillbedrasticallyreducedsoharnessingthisenergywillbefarmoreeconomicalthanatpresent. Inthispassagetheauthortellsusthatoneproblemwithnanotechisthat___
A.it could threaten our way of life B.It is misunderstood by the public C.It could be used to spy on people D.We only see nanotechology in some books and movies正确答案B
