【"Ihavesuperpowers"agirlnamedMeganwhisperstoherdoctorinarecentTVshow.That'sherexplanationforhowshe'sabletostandpainfulcutsandbeinghitwithabase-ballbat--allwithoutfeelinganypain.Acrossthewo】
"Ihavesuperpowers"agirlnamedMeganwhisperstoherdoctorinarecentTVshow.That'sherexplanationforhowshe'sabletostandpainfulcutsandbeinghitwithabase-ballbat--allwithoutfeelinganypain.
Acrosstheworldaboutafewhundredpeoplesufferfromoneofmanydisorders（紊乱）thatmakethemcompletelyunabletofeelpainfromthetimetheyareborn.
NowanewformofthisdisorderhasbeenrecognizedamongpeoplefromnorthernPakistanandscientistshavetrackeddownthechangedgeneresponsibleforthecondition.Theirstudycouldhelpresearchersgainabetterunderstandingofhowpainworksandmayhelpthemdevelopnewmedicinethatmayreducepainwithfewersideeffects.
ResearchersdiscoveredthelatestversionofthedisorderwhentheyfoundayoungstreetperformerinPakistanstickingknivesthroughhisarms.Thentheyfoundsixotherpeoplefromthreefamiliesinthesameareawhoalsohadthedisease.
Thesepeoplewereabletofeelhotandcoldsensepressureandcouldtellsharpobjectstouchingtheirskinfrombluntones.Theywereallbelievedtobeofonlyaverageintelligence.Butnoneofthemfeltanypain.Surprisinglythefamilieswereunrelatedbutallofthesufferershadchangestothesamegene.Thechangedgenecausesaprotein（蛋白质）toformpartofachannelthatisundoubtedlyimportantforhumansenseofpain.
Earlychildhoodcanbeawfulforpeoplewithoutfeelinganypain.Theycanbiteendlesslyontheirtonguesandfingersduringteethingsticktheirfingersintheireyesorsuffermajorinjurieswithoutnoticing.ThesixpeoplestudiedfortheNaturepaperallhadinjuriestotheirlipsortonguesfrombitingthemselveswhentheywereyoung.
1．Thestudyoffeelingnopainmightleadto__________.
A．ourfeelingpityforthepatients B．ourhelpingthepatientstorecover
C．ourremovingpainsinabetterway D．ourcuringillnessesmoreeffectively
2．Ifoneisbornpainlesshisparentsprobably____________.
A．haveanormalsenseofpain B．haveaweaksenseofpain
C．keepastrongsenseofpain D．lackanaturalsenseofpain
3．Itcanbeinferredfromthepassagethatit's forchildrenwhofeelnopain.
