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hsstopintendedoA.Beautifying the crowded cteInducing ec-freny podetOMering insects islands of nature.Drwing attention to climate change.te underlnedornA.Strong.B.Large.C.CleanWhich of the following best deseribes the bee bus stopomD.Attractive.A.Gost山yB.Controversial.DC.DemandingD.Successful.For years,doctors have given blood to patientshoeedTheseinclude giving red blood cells to patients.Blood transfusion aren'tas simple as taking blood fromone pendnheere several different blood types that don't all mix well.Ifmgefhendof blood,their body will rejeet the blood cells,cuin poblemFor the firmemthe University of Bristol,Britain,are carrying out a new trail:testinred blood celllaboratory on human volunteers.The scientists have used stem cells()from a blood sampletogrow billions of brand new red blood cells.This could be even better than a regular blood transfusion.For one thing,they can be adjusted forpeople with different blood types.That'll be extremely helpful for people withrare blood types.are callednormal transfusion has red blood cells of all different ages,which means only a small part of them arebrand new.The red blood cells grown in the lab are brand new,and this means they last longer and thatrees,andpatients will need fewer transfusions.r of mostTo test its safety,researchers have given a couple of teaspoons of the blood to two healthy peoplcouldn'tboth of whom seem to be doing just fine after the transfusions.In all,they'll be tested on 10 people,aland forcompared to normal transfusions.The new process doesn't indicate that normal blood transfusionswch worksdisappear.Meanwhile,growing red blood cells in a lab is extremely expensive.And a lot of work atesting still need to be done.But if it's successful,the process could make life much easier for patieWildlifewho often need transfusions-even those with rare blood types.nary bus2.What is special about the red blood cells in the experiment?plantsA.They're given by those with rare blood types.p to aB.They're collected from seriously ill patients.C.They're specifically for a single blood type.eed toD.They've never existed in any human bodies.ch is33.What is the disadvantage of normal blood transfusion?A.Blood reserves are often inadequate.B.It often takes the patient a lot of time.pe isC.Most normal blood cells don't live long.D.It's unfit for those with rare blood typesthatWhat can be inferred about the new process of red blood cells?es ofA.It will have a long way to go.B.It'll replace normal transfusions.C.It will separate rare blood types.D.It'll reduce blood research costs.35.Which can be a suitable title for the text?A.Blood Transfusions Get EasierB.Rare Blood Types Are Not RareC.Rare Blood Cells Need DonatingD.Scientists Test Lab-created Blood英语试题第5页（共8页）