2021届汕头市龙湖区翠英中学高三英语三模试题及答案解析.pdf

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1、2021 届汕头市龙湖区翠英中学高三英语三模试题及答案解析 第一部分 阅读（共两节，满分 40 分）第一节（共 15 小题；每小题 2 分，满分 30 分）阅读下列短文，从每题所给的 A、B、C、D 四个选项中选出最佳选项 A Bird migration is described as the regular,seasonal movement of bird populations from one place to another and back again.The longer days and rich food of the northern summer provide gre

2、ater chances for birds to feed their young.The longer daylight hours and enormous food resources allow birds to lay larger eggs than those of related non-migratory species that remain in the tropics all year round.As the days shorten in autumn and the breeding period is over,the birds return to warm

3、er regions where the available food supply differs little with the seasons changing.The advantages of migration make up for the high stress,physical exertion（消耗）,and other risks of the migration.Day length is the primary environmental factor that encourages birds to prepare for migration.They have a

4、n increased appetite which results in weight gaining,giving them the fat reserves that provide energy for their migratory flight.They also show more activity at night,which is when most birds migrate.While the length of day is the primary reason for migration,birds also respond to temperature change

5、s.For example,if a spring is late and the temperature is lower than normal,birds delay migration;if a spring is early,birds also begin migration early.The timing of the migratory cycle must allow birds to arrive on the breeding site so that there is time tobuild a breeding place,mate,lay the eggs,an

6、d hatch the young before the rich food is available to feed the young in the nest.Similarly,if birds wait until the climate in their northern breeding grounds becomes tolerable(可忍受的),there will be no time togain the necessary weight that provides the energy needed for their southbound migration.1.Wh

7、y do birds migrate to the north in spring?A The temperature in the south has risen.B.They like traveling and enjoy the journey.C.The summer there is warmer than that in the south.D.The environment there is more suitable for them to feed their baby birds.2.What are the two factors that cause birds to

8、 migrate?A.Day length and food supply.B.Night length and high stress.C.Temperature changes and daylength.D.Food supply and temperature changes.3.Which can be the best title for the text?A.Birds Life B.Birds Migration C.Birds Breeding Habits D.Birds Living Environment B A world in which extinct creat

9、ures could be brought back to life came a step closer yesterday.Australian scientists have managed to extract a gene from a preserved sample of a Tasmanian tiger and make it active.Thebreakthroughhas left them dreaming that one day they will be able to recreate the animal,which died out more than 70

10、 years ago.And if it can be done with the Tasmanian tiger,it may also be possible to resurrect(复活)creatures that have been extinct for far longer.“There used to be a time when extinction meant forever,but no more,”said Professor Mike Archer.“We are now able to seriously challenge whether those anima

11、ls that have gone for ever.What has been achieved is a very important step in bringing back those animals that are extinct.And while I think that technically it is still pretty difficult at the moment,we can now see the possibilities.Im personally convinced that the Tasmanian tiger will be brought b

12、ack to life in my lifetime.”The breakthrough came after nine years of experiments by scientists at the University of Melbourne,who extracted a gene from one of several tigers preserved in alcohol in a Melbourne museum.They removed the equivalent gene from a mouse embryo implanted the tiger gene and

13、then watched as the mouse continued to grow normally,suggesting the tiger gene had been activated.Team leader Dr.Andrew Pask said it was the first time DNA from an extinct species had been used to“induce(引起)a functional response in another living organism”.However,the animals entire gene structure w

14、ould have to be revived in the same way to even begin the possibility of bringing the Tasmanian tiger back from the dead.Mick Mooney,a wildlife officer ofthe Tasmanian Government,was worried that such developments could encourage peoples indifference to the protection of endangered species.“If peopl

15、e think that we can bring animals back to life after theyve gone,they will start saying that there is nothing to worry about because we can fix it up later.”4.What does the underlined word“breakthrough”in the l paragraph refer to?A.Scientists have recreated new animals.B.Scientists have resurrected

16、endangered animal.C.It has turned out that some creatures would not go extinct.D.A tiger gene has been extracted successfully and activated.5.Scientists are carrying out the experiments in order to _.A.bring extinct animals back to life B.transplant the genes of tigers into other animals C.find out

17、what factors lead to the animals extinction D.find a new way to extract animals DNA 6.Mike Archer thinks that _.A.scientists now have no technological difficulty reconnecting extinct animals B.itll be a century or so before a Tasmanian tiger walks on the earth again C.humans have come closer in reco

18、nnecting extinct animals D.reconnecting extinct animals is impossible 7.We can learn from Mick Mooncys words that_.A.he thought it unnecessary to worry about endangered animals B.his opinion is in contrast with that of the Tasmanian Government C.he thought people should be encouraged to protect enda

19、ngered animals D.he is concerned that bringing extinct animals back to life may have a negative effect C Disease-carrying mosquitoes can spread diseases without affecting themselves.Nearly 700 million people get a mosquito-borne illness each year,which results in over one million deaths.Humans exper

20、ience continuous pressures from disease-carrying mosquitoes in many parts of the world,so we have to find ways to fight against those insects because they keep getting scarier.Even though DEET remains the most commonly used,and most powerful,mosquito repellent ever developed,scientists are actively

21、pursuing effective products based entirely on plant oils.While DEET is an effective contact repellent,many people dislike the oily feel and smell on their skin,and sometimes some people are sensitive to it.Consumers are always interested in alternatives to DEET and other synthetic repellents,so ther

22、e are numerous natural repellents on the market.In his lab atIowaStateUniversity,Dr.Joel Coats and his team have successfully tested these repellents against three species of dangerous mosquitoes.The first group of the new repellents act through the air.These chemicals have a vapor action that provi

23、des protection,and they are called“spatial”repellents,since they act through space.These are potentially most useful in backyards,parks,and houses.The other group are the classic ones that stop insects from standing on a treated surface,such as human skin,clothing or tents;collaborators at the USDA-

24、ARS and BioGents have conducted testing with humans to confirm the effectiveness and identify the very best ones.The new repellents were designed and made from the natural materials in plant essential oils.They maintain many of the advantages of the natural repellents:They are fully biodegradable,wi

25、th no ecological concerns or environmental wastes,and generally considered safe like the thousands of types of plant essential oils used in the flavor and perfume industries.However,thorough testing will be conducted to determine if they are truly non-poisonous because there is still no enough evide

26、nce.8.What does the author mainly want to show in paragraph 1?A.The way mosquitoes spread disease.B.The high death rate of mosquito-borne illness.C.The difficulty of fighting disease-carrying mosquitoes.D.The urgency of finding tools to fight against mosquitoes.9.What is a disadvantage of DEET?A.It

27、wont be effective for long.B.It cant be applied universally.C.It causes discomfort to the users.D.It greatly harms peoples health.10.What can we learn about the second group of the new repellents?A.They can kill mosquitoes indirectly.B.They are mainly used in the open air.C.They are more effective o

28、n human skin.D.They can prevent mosquitoes from contacting users.11.Whats the authors attitude to the new repellents?A.Subjective.B.Objective.C.Doubtful.D.Disapproving.D A world in which extinct creatures could be brought back to life came a step closer yesterday.Australian scientists have managed t

29、o extract a gene from a preserved sample of a Tasmanian tiger and make it active.Thebreakthroughhas left them dreaming that one day they will be able to recreate the animal,which died out more than 70 years ago.And if it can be done with the Tasmanian tiger,it may also be possible to resurrect(复活)cr

30、eatures that have been extinct for far longer.“There used to be a time when extinction meant forever,but no more,”said Professor Mike Archer.“We are now able to seriously challenge whether those animals that have gone for ever.What has been achieved is a very important step in bringing back those an

31、imals that are extinct.And while I think that technically it is still pretty difficult at the moment,we can now see the possibilities.Im personally convinced that the Tasmanian tiger will be brought back to life in my lifetime.”The breakthrough came after nine years of experiments by scientists at t

32、he University of Melbourne,who extracted a gene from one of several tigers preserved in alcohol in a Melbourne museum.They removed the equivalent gene from a mouse embryo implanted the tiger gene and then watched as the mouse continued to grow normally,suggesting the tiger gene had been activated.Te

33、am leader Dr.Andrew Pask said it was the first time DNA from an extinct species had been used to“induce(引起)a functional response in another living organism”.However,the animals entire gene structure would have to be revived in the same way to even begin the possibility of bringing the Tasmanian tige

34、r back from the dead.Mick Mooney,a wildlife officer ofthe Tasmanian Government,was worried that such developments could encourage peoples indifference to the protection of endangered species.“If people think that we can bring animals back to life after theyve gone,they will start saying that there i

35、s nothing to worry about because we can fix it up later.”12.What does the underlined word“breakthrough”in the l paragraph refer to?A.Scientists have recreated new animals.B.Scientists have resurrected endangered animal.C.It has turned out that some creatures would not go extinct.D.A tiger gene has b

36、een extracted successfully and activated.13.Scientists are carrying out the experiments in order to _.A.bring extinct animals back to life B.transplant the genes of tigers into other animals C.find out what factors lead to the animals extinction D.find a new way to extract animals DNA 14.Mike Archer

37、 thinks that _.A.scientists now have no technological difficulty reconnecting extinct animals B.itll be a century or so before a Tasmanian tiger walks on the earth again C.humans have come closer in reconnecting extinct animals D.reconnecting extinct animals is impossible 15.We can learn from Mick M

38、ooncys words that_.A.he thought it unnecessary to worry about endangered animals B.his opinion is in contrast with that of the Tasmanian Government C.he thought people should be encouraged to protect endangered animals D.he is concerned that bringing extinct animals back to life may have a negative

39、effect 第二节（共 5 小题；每小题 2 分，满分 10 分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项 I am a very nostalgic(怀旧的)person.When I go on trips I keep everything from bus tickets to leaflets and I always take hundreds of photographs to look at when I get home.I love thinking of exciting adventures I have had._16_On

40、e of the most interesting ways to remember things is to read old letters,either ones you have sent to yourself or those you have received from someone else.Living abroad this year has really made me think about how I keep in contact with my family and friends._17_It forces me to think about all the

41、amazing things that have happened and by writing them down,reminds me of how lucky I am to be able to experience so many new things.Not only is writing letters an excellent thing to do,but I always think the best bit is when you receive a letter in reply!There is something so exciting about receivin

42、g letters,especially when the address is handwritten._18_It is so special to have a box full of old letters.In a world where we update our friends constantly over social media,it is easy to forget to reach out to people personally._19_In ten or twenty years,is social media still going to be around a

43、nd are we still going to be able to look back at our memories and see what we were doing?Nobody knows._20_ A.Having something physical to look at makes it easier.B.The most enjoyable way to keep memories is writing letters.C.One of the things I enjoy doing most is writing them letters.D.By writing a

44、 letter,you remind people that you are thinking of them.E.You can see that somebody has put time and effort into contacting you.F.Reading them years later reminds you of all the exciting things you once did.G.However,having some letters to read means you will always have those memories.第二部分 语言运用（共两节

45、，满分 45 分）第一节（共 20 小题；每小题 1.5 分，满分 30 分）阅读下面短文，从每题所给的 A、B、C、D 四个选项中选出可以填入空白处的最佳选项 That was a happy evening for the little Down syndrome(唐氏症)girl a teenager the size of a ten-year-old.She and her family were_21_themselves at McDonalds.She made her way to the restroom.Her younger,but_22_,brother sat qu

46、ietly.He noticed something,which_23_,she had not noticed.Four teenagers had taken an interest in the little girl the moment they_24_her.They were openly laughing and pointing.The brother_25_for his sister.He walked to the guys.They paledslightly and looked alarmed when this total stranger their_26_b

47、y a year or two placed his hands_27_on their table.They studied each other while he was clearly in their_28_,and while they were most definitely out of their comfort zones.The brother_29_with one hand for one of them to move over.He_30_to sit right down next to them.Somewhat in_31_,and caught comple

48、tely unprepared,they made space for him.“I was watching you making fun of my sister,”he quietly_32_them.All four stumbled(磕磕绊绊)over their words in their rush.“Who?That was your sister?We werent making fun of her!We_33_we would never_34_ anyone.We just felt sorry for her.”But he told them again,“I wa

49、tched you.”They_35_,knowing they had been caught red-handed and maybe even realizing their_36_and cruelness.Maybe they even sense the love this brother had for his sister.The brother turned_37_them and then he said_38_“I feel sorry for people like YOU!”Then he walked away.When the sister went back t

50、o her seat,the four looked away,_39_sure they looked ly anywhere_40_that little girl.21.A.caring B.cooking C.enjoying D.helping 22.A.elder B.smaller C.bigger D.smarter 23.A.thankfully B.hopefully C.greatly D.cautiously 24.A.robbed B.spotted C.blocked D.caught 25.A.made up B.put up C.took up D.stood