carbon monoxide poisoning 阅读理解答案

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1、Carbonmonoxidepoisoning阅读理解答案　　Carbonmonoxidepoisoning(一氧化碳中毒)killsandinjuriesmanypeopleandanimalsaroundtheworld.Thisgashasbeenaproblemsincepeoplefirstbeganburningfuelstocookfoodortocreateheat.Itisaprobleminallpartsoftheworldthatexperience　　coldweather.　　

2、Carbonmonoxideiscalledthesilentkillerbecausepeopledonotknowitisintheair.Thegashasnocolor.Ithasnotaste.Ithasnosmell.Itdoesnotcauseburningeyes.Anditdoesnotcausepeopletocough.Butitisverydeadly.Itrobsthebody’sabilitytouseoxygen.　　Carbonmonoxidedecreasestheabi

3、lityofthebloodtocarryoxygentobodytissues.Itdoesthisbylinkingwiththeblood.Whenthegaslinkswiththeblood,thebloodisnolongerabletocarryoxygentothetissuesthatneedit.　　Damagetothebodycanbeginveryquicklyfromlargeamountsofcarbonmonoxide.Howquicklythiscanhappendepe

4、ndsonthelengthoftimeapersonisbreathingthegasandtheamountofthegasheorshebreathesin.Carbonmonoxidepoisoninghaswarningsigns.Butpeoplehavetobeawaketorecognizethem.Smallamountsofthegaswillcauseaperson’sheadtohurt.Heorshemaybegintofeeltired.Thepersonmayfeelsick

5、.Theroommayappeartobeturningaround.Thepersonmayhavetroublethinkingclearly.Peopledevelopsevereheadpainastheamountofthegascontinuestoentertheirblood.Theywillbegintofeelverytiredandsleepy.Theymayhaveterriblestomachpains.　　Medicalexpertssaycarbonmonoxideaffec

6、tspeopledifferently.Forexample,asmallchildwillexperiencehealthproblemsordiemuchquickeranadultwill.Thegeneralhealthofthepersonorhisorheragecanalsobeimportant.Anolderadultwithhealth　　problemsmaysuffertheeffectsofcarbonmonoxidemorequicklythanayoungerpersonwi

7、thnohealthproblems.Peoplewithheartdiseasemaysufferchestpains.Theymaybegintohavetroublebreathing.　　()56.Whyiscarbonmonoxidecalledthesilentkiller?　　A.Becauseittastesandsmellsgood.　　B.Becauseitisnoteasilynoticed.　　C.Becauseitkillsandinjurespeople.　　D.Because

8、itisalwaysharmfultopeople　　()57.Howdoescarbonmonoxideharmpeople?　　A.Itmakespeople’sbloodunabletomove.　　B.Itdecreasestheamountofbloodinthebody.　　C.Itmakesbodytissuesfullofblood.　　D.Itmakesthebloodlessabletocarryoxyge