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1、2023年广东公共英语考试真题卷（5）本卷共分为1大题5 0小题，作答时间为180分钟，总分100分，6 0分及格。一、单项选择题（共5 0题，每题2分。每题的备选项中，只有一个最符合题意）1.The biggest safety threat facing airlines today maynot be a terrorist with a gun,but the man with theportable computer in business class.In the last 15years,pi lots have reported well over 100 incidentst
2、hat could have been caused by electromagneticinterference.The source of this interference remainsunconfirmed,but increasingly,experts are pointingthe blame at portable electronic devices such asportable computers,radio and cassette players andmobile telephones.RTC A,an organization whichadvises the
3、aviation industry,has recommended that allairlines ban such devices from being used during“critical“stages of flight,particularly take-off andlanding.Some experts have gone further,calling fora total ban during all flights.Currently,rules onusing these devices are left up to individual airlines.And
4、although some airlines prohibit passengers fromusing such equipment during take-off and landing,mostare reluctant to enforce a total ban,given that manypassengers want to work during flights.Thedifficulty is predicting how electromagnetic fieldsmight affect an aircraft,s computers.Experts knowthat p
5、ortable devices emit radiation which affectsthose wavelengths which aircraft use for navigation andcommunication.But,because they have not been able toreproduce these effects in a laboratory,they have noway of knowing whether the interference might bedangerous or not.The fact that aircraft may bevul
6、nerable to interference raises the risk thatterrorists may use radio systems in order to damagenavigation equipment.As a result,loud music soundmakes the passenger unable to hear the instructionsturning off his radio,this is the most worrying thingsto airlines.Few airlines want to impose a total ban
7、 ontheir passengers using electronic devices becauseA.they have other effective safety measures to fallback onB.the harmful effect of electromagnetic interferenceis yet to be provedC.most passengers refuse to take a plane which bansthe use of radio and cassette playersD.they don,t believe there is s
8、uch a danger as radiointerference2.Some animals apparently can resist cancer bystrengthening their immune system in preparation forwinter,Johns Hopkins researchers said on Wednesday.The scientists said their study is the first to showthat the central nervous system,reacting toenvironmental changes,m
9、ay spark changes in the body simmune system that control the growth of tumors.They said if that is the ease,a better understandingof how the process works eventually could lead to newcancer treatments.Dr.Randy Nelson,an associateprofessor of psychology at Hopkins,stressed at ameeting of the Society
10、of Neuroscience that furtherstudy would be needed to confirm a connection betweenthe length of the day,the animals,immune system andcancer.More work also would be needed to show that thefindings could be applied to human cancer.Dr.FayeAustin,an immunologist with the National C ancerInstitute in Beth
11、esda,said:It s a very intriguingobservation that the length of exposure to light canaffect the growth of a tumour.But I think that the drawsreally need further work to clarify the mechanics.”But Austin said the findings were surprising andimportant,only because they open up a new approach forresearc
12、h.Studies showed that stress weakened theimmune system in animals.They figured that becausewinter is stressful,the season probably causesexertion（影 响）on the immune system.Theresearchers reasoned that animals that compensated byboosting（促 进）their immune systems as winterapproached would have a better
13、 chance of surviving andproducing offspring.In the same way that animalshave evolved to select the best time to breed,it struckme that animals ought to be able to predict whenconditions would be challenging immunologically.Nelson said.Animals can strengthen their immune systemin preparation for wint
14、er because.A.when season changes,the central nervous systemreacts to environment and that sparks changes in thebody s immune systemB.animals have shorter exposure to light in winter thanin summerC.animals have evolved to select the best time to breedand be able to predict the change of conditionsD.a
15、ll of the above3.Some animals apparently can resist cancer bystrengthening their immune system in preparation forwinter,Johns Hopkins researchers said on Wednesday.The scientists said their study is the first to showthat the central nervous system,reacting toenvironmental changes,may spark changes i
16、n the body simmune system that control the growth of tumors.They said if that is the ease,a better understandingof how the process works eventually could lead to newcancer treatments.Dr.Randy Nelson,an associateprofessor of psychology at Hopkins,stressed at ameeting of the Society of Neuroscience th
17、at furtherstudy would be needed to confirm a connection betweenthe length of the day,the animals immune system andcancer.More work also would be needed to show that thefindings could be applied to human cancer.Dr.FayeAustin,an immunologist with the National C ancerInstitute in Bethesda,said:It s a v
18、ery intriguingobservation that the length of exposure to light canaffect the growth of a tumour.But I think that the drawsreally need further work to clarify the mechanics.But Austin said the findings were surprising andimportant,only because they open up a new approach forresearch.Studies showed th
19、at stress weakened theimmune system in animals.They figured that becausewinter is stressful,the season probably causesexertion（影 响）on the immune system.Theresearchers reasoned that animals that compensated byboosting（促 进）their immune systems as winterapproached would have a better chance of survivin
20、g andproducing offspring.In the same way that animalshave evolved to select the best time to breed,it struckme that animals ought to be able to predict whenconditions would be challenging immunologically.Nelson said.Which statement can be the best title forthis articleA.Dr.Randy Nelson and His New F
21、indings.B.Animals Resistance to Cancer.C.Winter and AnimalsJ Immune System.D.A Light in the Cancer Darkness.4.The biggest safety threat facing airlines today maynot be a terrorist with a gun,but the man with theportable computer in business class.In the last 15years,pi lots have reported well over 1
22、00 incidentsthat could have been caused by electromagneticinterference.The source of this interference remainsunconfirmed,but increasingly,experts are pointingthe blame at portable electronic devices such asportable computers,radio and cassette players andmobile telephones.RTCA,an organization which
23、advises the aviation industry,has recommended that allairlines ban such devices from being used during“critical stages of flight,particularly take-off andlanding.Some experts have gone further,calling fora total ban during all flights.Currently,rules onusing these devices are left up to individual a
24、irlines.And although some airlines prohibit passengers fromusing such equipment during take-off and landing,mostare reluctant to enforce a total ban,given that manypassengers want to work during flights.Thedifficulty is predicting how electromagnetic fieldsmight affect an aircraft?s computers.Expert
25、s knowthat portable devices emit radiation which affectsthose wavelengths which aircraft use for navigation andcommunication.But,because they have not been able toreproduce these effects in a laboratory,they have noway of knowing whether the interference might bedangerous or not.The fact that aircra
26、ft may bevulnerable to interference raises the risk thatterrorists may use radio systems in order to damagenavigation equipment.As a result,loud music soundmakes the passenger unable to hear the instructionsturning off his radio,this is the most worrying thingsto airlines.Why is it difficult to pred
27、ict the possibleeffects of electromagnetic fields on an airplane1 scomputersA.Because it is extremely dangerous to conduct suchresearch on an airplane.B.Because experts lack adequate equipment to do suchresearch.C.Because research scientists have not been able toproduce the same effects in labs.D.Be
28、cause it remains a mystery what wavelengths areliable to be interfered with.5.Space is a dangerous place,not only because ofmeteors（流星）but also because of rays from the sunand other stars.The atmosphere again acts as ourprotective blanket on earth.Light gets through,andthis is essential for plants t
29、o make the food which weeat.Heat,too,makes our environment endurable.Various kinds of rays come through the air from outerspace,but enormous quantities of radiation（辐射）fromthe sun are screened off.As soon as men leave theatmosphere they are exposed to this radiation but theirspacesuits or the walls
30、of their spacecraft,if theyare inside,do prevent a lot of radiation damage.Radiation is the greatest known danger to explorers inspace.The unit of radiation is called rem.Scientists have reason to think that a man can put upwith far more radiation than 0.1 rem without beingdamaged;the figure of 60 r
31、ems has been agreed on.Thetrouble is that it is extremely difficult to be sureabout radiation damage一a person may feel perfectlywell,but the cells of his or her sex organs may bedamaged,and this will not be discovered until the birthof deformed（畸形的）children or even grandchildren.Missions of the Apol
32、lo flights have had to cross beltsof high radiation and,during the outward and returnjourneys,the Apollo missions have been quite short.We simply do not know yet how men are going to get onwhen they spend weeks and months outside the protectionof the atmosphere,working in space laboratory.Rugsmight
33、help to decrease the damage done by radiation,but no really effective ones have been found so far.Thebest title for this passage would be.A.Research on RadiationB.Effects of Space RadiationC.Importance of Protection against RadiationD.The Atmosphere and Our Environment6.The biggest safety threat fac
34、ing airlines today maynot be a terrorist with a gun,but the man with theportable computer in business class.In the last 15years,pilots have reported well over 100 incidentsthat could have been caused by electromagneticinterference.The source of this interference remainsunconfirmed,but increasingly,e
35、xperts are pointingthe blame at portable electronic devices such asportable computers,radio and cassette players andmobile telephones.RTCA,an organization whichadvises the aviation industry,has recommended that allairlines ban such devices from being used during“critical“stages of flight,particularl
36、y take-off andlanding.Some experts have gone further,calling fora total ban during all flights.Currently,rules onusing these devices are left up to individual airlines.And although some airlines prohibit passengers fromusing such equipment during take-off and landing,mostare reluctant to enforce a t
37、otal ban,given that manypassengers want to work during flights.Thedifficulty is predicting how electromagnetic fieldsmight affect an aircraftJ s computers.Experts knowthat portable devices emit radiation which affectsthose wavelengths which aircraft use for navigation andcommunication.But,because th
38、ey have not been able toreproduce these effects in a laboratory,they have noway of knowing whether the interference might bedangerous or not.The fact that aircraft may bevulnerable to interference raises the risk thatterrorists may use radio systems in order to damagenavigation equipment.As a result
39、,loud music soundmakes the passenger unable to hear the instructionsturning off his radio,this is the most worrying thingsto airlines.It can be inferred from the passage thatthe author.A.is in favor of prohibiting passengers?use ofelectronic devices completelyB.regards it as unreasonable to exercise
40、 a total banduring flightC.hasn,t formed his own opinion on this problemD.has overestimated the danger of electromagneticinterference7.BPart A/B1You will hear 10 shortdialogues.For each dialogue,there is one question andfour possible answers.C hoose the correct answer 一A,B,C or D,and mark it in your
41、 test booklet.You willhave15 seconds to answer the question and you will heareach dialogue ONLY ONC E.Now look at Question1./IWhat does the woman think of the priceA.Reasonable.B.C heap.C.Expensive.D.Unacceptable.8.B Part A/B You will hear 10 shortdialogues.For each dialogue,there is one question an
42、dfour possible answers.C hoose the correct answer 一A,B,C or D,and mark it in your test booklet.You willhave15 seconds to answer the question and you will heareach dialogue ONLY ONC E.Now look at Question1./IWhat will the speakers doA.Have dinner.B.Go to the laboratory.C.Have classes.D.Go shopping.9.
43、BPart A/B 1 You will hear 10 shortdialogues.For each dialogue,there is one question andfour possible answers.C hoose the correct answer 一A,B,C or D,and mark it in your test booklet.You willhave15 seconds to answer the question and you will heareach dialogue ONLY ONC E.Now look at Question1./IWhat do
44、es the man ask the woman to doA.Send a note to Professor J ohnson.B.Wait a minute to see Professor J ohnson.C.Write a note to Professor J ohnson.D.Listen to Professor J ohnson s speech.10.BPart A/B1 You will hear 10 shortdialogues.For each dialogue,there is one question andfour possible answers.C ho
45、ose the correct answer 一A,B,C or D,and mark it in your test booklet.You willhave15 seconds to answer the question and you will heareach dialogue ONLY ONC E.Now look at Question1./IWhy can t the man ring the womanA.He doesn,t have a telephone.B.His telephone was stolen.C.His telephone doesn,t work.D.
46、He doesn,t have time.11.B Part A/B1 You will hear 10 shortdialogues.For each dialogue,there is one question andfour possible answers.C hoose the correct answer 一A,B,C or D,and mark it in your test booklet.You willhave15 seconds to answer the question and you will heareach dialogue ONLY ONC E.Now loo
47、k at Question1./IWhat is the possible relationship between thespeakersA.Salesman and customer.B.Post office clerk and customer.C.Teacher and student.D.Railway station clerk and passenger.12.What are the two speakers talking aboutA.Plans for the weekend.B.A wonderful movie.C.Some reference books.D.Th
48、e graduation paper.13.What does the man thinking people nowA.If something seems far better than expected,it isprobably not good.B.If something seems far better than expected,grabit while you can.C.If something seems far better than expected,it mustbe not good.D.If something seems far better than exp
49、ected,it mustbe very good.14.What does Mary usually do on Saturday afternoonA.She reads books.B.She goes to the park.C.She does some exercises.D.She watches TV.15.How does the man feel about driving to workA.RelaxedB.TiredC.BoredD.Lonely16.What are the man and the woman talking aboutA.C olors.B.Swea
50、ters.C.Films.D.Music.17.1Questions 11-13 are based on the followingdialogue./IWhy does the man talk with SandraA.He is not satisfied with Sandra,s working attitude.B.He wants to increase Sandra s salary.C.He wants to fire Sandre.D.He wants to charge Sandre s job.18.1Questions 14-17 are based on the