问题标题:
Whenyoucutyourskin,youbleed(流血).Ifapersonlosesalotofblood,hewillbecomeillandmaydie.Bloodisveryimportant.Peoplehavealwaysknownthat.Atonetime,somepeopleevendrankbloodtomakethemstrong!Whendoctor
问题描述:

Whenyoucutyourskin,youbleed(流血).Ifapersonlosesalotofblood,hewillbecomeillandmaydie.Bloodisveryimportant.Peoplehavealwaysknownthat.Atonetime,somepeopleevendrankbloodtomakethemstrong!

Whendoctorsunderstandhowbloodgoesaroundinsidethebody,theytrywaysofgivingbloodtopeoplewhoneedit.Theytakebloodfromthehealthypeopleandgiveittosickpeople.Thiscalled“bloodtransfusion”.Thebloodgoesfromthearmofthehealthypersonintothearmofthesickperson.

Buttherearetwoproblems.First,itdoesnotalwayswork.Sometimespeoplediewhentheyhavebloodtransfusion.Later,doctorsfindthatwedonotallhavethesamekindofblood.Therearefourgroups—O,A,BandAB.Weallhavebloodofoneofthesegroups.TheyalsofindthattheycangiveanykindofbloodtogroupAB.ButtheyfindthattheymustgiveA-bloodtoA-bloodpeopleandB-bloodtoB-bloodpeople.IhaveO-groupbloodasmyfatherandthedoctortoldmethatIcouldgivemybloodtoanyoneelsesafely.SoIdid.

Thereisanotherproblem.Togivebloodoftherightkind,doctorshavetofindapersonoftherightbloodgroup.Oftentheycannotfindapersonintime.Iftheyhaveawaytokeeptheblooduntilsomeoneneedsit,theycanalwayshavetherightkindofblood.Atfirst,theyfindtheycankeepitinbottlesforfifteentotwentydays.Theydothisbymakingitverycold.Thentheyfindhowtokeepitlonger.Intheend,theyfindawayofkeepingbloodforaverylongtime.

Wecallaplacewherewekeepmoneya“bank”.Wecallaplacewherewekeepblooda“bloodbank”.Oneday,whenyougrowup,youmaydecidetogivebloodtoa“bloodbank”.Inthiswayyoumaystopsomeonefromdying.Orperhapsonedayyoumaybecomeill.Youmayneedblood.The“bloodbank”willgiveittoyou.

Atonetimepeopleevendrankbloodbecausetheywantedto________.A

becomeill

B

killthemselves

C

makethemselvesstrong

D

cuttheirskin

“Bloodtransfusion”means“________”.A

toknowhowbloodgoesaround

B

togivedoctorshealthyblood

C

totakebloodfromthehealthypeople

D

togivehealthybloodtoasickperson

Doctorsfindthat________.A

苏曙光回答:
  【分析】1.根据第一段最后一句Atonetime,somepeopleevendrankbloodtomakethemstrong!可知答案。2.根据第二段第二句Theytakebloodfromthehealthypeopleandgiveittosickpeople.可知答案。3....
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《Whenyoucutyourskin,youbleed(流血).Ifapersonlosesalotofblood,hewillbecomeillandmaydie.Bloodisveryimportant.Peoplehavealwaysknownthat.Atonetime,somepeopleevendrankbloodtomakethemstrong!Whendoctor|初中物理问答-字典翻译问答网》
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