阅读理解
ByfarthemostcommonsnakeinBritainistheadder(蝰蛇).InScotlandinfacttherearenootherkindsofpoisonoussnakes.Itcanbefoundalmostanywherebutitpreferssunnyhillsidesandroughopencountryincludinghighground.InIrelandtherearenosnakesatall.
Mostpeopleregardsnakebitesasdeadlybutnotanbitesareseriousandveryfewaredeadly.Sometimesattemptsatemergencytreatmentturnouttobemoredangerousthanthebiteitselfwithsomeoneheroicallybutmistakenlytryingdo-it-yourselfsurgeryandotherunnecessarymeasure.
Allshakeshavesmallteethsoitfollowsthatallshakescanbitebutonlythebiteoftheadderpresentsanydanger.Britishsnakesareshyanimalsandarefarmorefrightenedofyouthanyoucouldpossiblybeofthem.Theadderwillattackonlyifitfeelsthreatenedascanhappenifyoutakeitbysurpriseandsteponitaccidentallyorifyoutrytocatchitorpickitupwhichitdislikesintensely.Ifithearsyoucomingitwillnormallygetoutofthewayasquicklyasitcanbutadderscannotmoveveryrapidlyandmayattackbeforemovingifyouareveryclose.
Theeffectofabitevariesconsiderable.ItdependsuponseveralthingsOneofwhichisthebody-weightofpersonbitten.Thebiggerthepersonthelessharmfulthebiteislikelytobewhichiswhychildrensufferfarmoreseriouslyfromsnakebitesthanadults.Ahealthypersonwillalsohavebetterresistanceagainstthepoison.
VeryfewpeopleactuallydiefromsnakebitesinBritainandthoughthesebitescanmakesomepeopleveryillthereareprobablyjustasmanyeasesofbiteshavinglittleornoeffectasthereareofseriousillness.
1.Addersaretobefound________.
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A.inmanypartsofBritainandIreland
B.everywhereinBritainexceptScotland
C.onwildlandthroughoutBritainexceptIreland
D.inshadyfieldsinScotland
2.Ifyouarewithsomeonewhoisbittenbyfinadderyoushould________.
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A.trytocatchtheadder
B.makenoattempttotreatthebitebyyourself
C.notworryaboutthevictim
D.operateOnhimassoonaspossible
3.Wearetoldthataddersare________.
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A.normallyfriendlytowardspeople