【谁能帮我做一篇英语阅读?Imaginereadingonedaythatyouhadbeenasubjectinariskyscienceexperimentwithoutknowingit.Atschool,youhadbeenfedcereallacedwithradioactivechemicals,soscientistscouldlearnmoreaboutthedigesti】
谁能帮我做一篇英语阅读?
Imaginereadingonedaythatyouhadbeenasubjectinariskyscienceexperimentwithoutknowingit.Atschool,youhadbeenfedcereallacedwithradioactivechemicals,soscientistscouldlearnmoreaboutthedigestivesystem.Becausethefoodwasradioactive,scientistscouldeasilytraceitspaththroughthebody.
Scientistsnowknowthatexposuretolargeamountsofradiationcancausecancer,agroupofdiseasesinwhichbodilycellsgrowwildlyoutofcontrol.Somepeoplewhowerepartoftheradiationstudieslaterdevelopedcancerandblametheradiationforcausingthecancer.Othersareworriedtheradiationwillsomedaymakethemsick.
Somedoctorssaythat,inmanycases,suchfearsareunjustifiedbecausetheradiationdosesusedintheexperimentsweretoosmalltocauseharm.Theyalsosaythatsincethedangersofradiationwerelesswell-understoodthenthantheyarenow,evenresearcherswhousedhighdosesofradiationdidn'tdoanythingwrong.
Somecriticsclaimthatnoexcuseisacceptablefornotinformingsubjectsaboutthenatureofanexperimentandgivingthemachancetorefusetoparticipate.Today,governmentrulesrequiresuchinformedagreementwheneverastudyusespeople.
1.Thepassageismainlyabout______.
A)whetheritismoraltoexperimentonpeoplewithouttheirknowingit
A)whatkindsofexperimentcannotbedoneonpeople
B)howradiationstudiesareconductedinasecretway
D)whatresultcanbeproducedinaradioactiveexperiment
2.Theword"laced"inparagraph1mostprobablymeans______.
A)surroundedB)mixedC)coveredD)confused
3.Whichofthefollowingistrueaccordingtothepassage?
A)Radioactivechemicalswereonceusedtocurediseaseswiththedigestivesystem.
B)Whenthedangerofradiationhadnotbeenproved,highdosesofradiationwereacceptable.
C)Mostcancersarecausedbyradiation.
D)Radioactivechemicalscancausebodilycellstogrowwildlyoutofcontrol.
4.Today,governmentrules______.
A)prohibitalltestsrelatedtohumanbeings
B)disapproveofexperimentswithuncertainresults
C)demandtoprotectpeople'srigh