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1、20202020 届昆明市官渡区第五中学高三英语下学期期末试题及答案届昆明市官渡区第五中学高三英语下学期期末试题及答案第一部分第一部分阅读（共两节，满分阅读（共两节，满分4 40 0 分）分）第一节（共第一节（共 1515 小题；每小题小题；每小题 2 2 分，满分分，满分 3030 分）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 AChina has 410K5Gbase stationsChina built 257,000 new 5G base stations in the first half of the year,according to the M
2、inistry of Industryand Information Technology(MIIT).Shipments of 5G phones reached 8623 million unis in China,with 5G package users hitting 66 million by theend of June,said Wen Ku,head of information and communication at the ministry.To give full play to the commercialization of 5G,more policies sh
3、ould be implemented to boost the vitality ofthe market,Wen said,adding that international cooperation in 5G technology,industry and application should bestrengthened.AG600 seaplanes test flightKunlong,Chinas homegrown AG600 large amphibious aircraft,conducted its first sea-based test flight onSunday
4、 morning,marking a new milestone in the program.The AG600 is Chinas second amphibious aircraft,after the SH-5,which was developed in the 1970s formilitary purposes and has been retired for a long time.These specifications make it the worlds biggest amphibious aircraft,surpassing Japans ShinMaywa US-
5、2 andRussias Beriev Be-200.Once in service,it will put an end to the absence of a large rescue aircraft in China and will be very useful inthe national emergency rescue and disaster relief systems.Beidou products land abroadAccording to Ran Chengqi,director general of China Satellite Navigation Offi
6、ce,Beidou has been constantlydeepening its compatibility,interoperability and cooperation with the US GPS,Russias GLONASS and the EUsGalileo.It has also entered international organizations of civil aviation,maritime affairs,search and rescuesatellites and mobile communication.BDS-based services have
7、 been successfully applied in land mapping,precision farming,digital developmentand smart port construction in member countries of ASEAN,South Asia,Eastern Europe,West Asia and Africa.1.What can we learn from this passage?A.The total number of 5G phones has reached a new level.B.Kunlong,unlike SH-5,
8、is not just for military purposes.C.Technologies mentioned above need more cooperation with others.D.BDS-based services have been provided for users in many countries.2.Which of the following is most probably related to agriculture?A.5G phonesB.BDS-based servicesC.AG600 seaplaneD.Beriev Be-2003.If y
9、our friend did a course in marketing management,he may choose a job in a _.A.5G technology related marketB.large amphibious aircraftC.BDS-based projectD.China Satellite Navigation OfficeBMost children who have suffered from ADHD still have it as teens.During teen years,especially as thehormonal chan
10、ges of teenagers are going on and the demands of school and extra-curricular activities areincreasing,ADHD may get worse.Because of problems with getting unfocused and poor concentration,many teens with ADHD have problemsin school.Grades may fall,especially if the teen is not getting ADHD treatment.
11、Its not uncommon for teens withADHD to forget their homework,lose textbooks,and become bored with their daily class work.Teens may becomeinattentive or extremely attentive,not waiting for their turn before blurting out answers.They may cut in on theirteacher and classmates.Teens with ADHD may also b
12、efidgetyand find it hard to sit still in class.Often,teens with ADHD are so busy focusing on other things that they forget about the task at hand.This canbe seen especially with homework and athletic skills and in relationships with their schoolmates.This lack ofattention to what theyre doing often
13、leads to bad grades on tests and being passed over for sports teams,after-school activities,and learning teams.Kids with ADHD can be targets for bullying,too.But,not all childrenwith ADHD have trouble getting along with others.If your child does,you can take measures to help improve theirsocial skil
14、ls and relationships.ADHD affects all parts of a teenagers life.As a parent you should discover your teens troubles as early aspossible.The earlier your childs troubles are discovered,the more successful the following steps can be.4.What does the author plan to do in paragraph 1?A.To list the types
15、of ADHD.B.To introduce the main topic.C.To show the authors opinion.D.To explain the causes of ADHD.5.What does the underlined word“fidgety”probably mean in paragraph 2?A.Clever.B.Noisy.C.Restless.D.Lazy.6.What is the text mainly about?A.Ways to deal with ADHD.B.Effects of ADHD on teens.C.Teens scho
16、ol performances.D.Demands of school work.7.What may the following paragraph talk about?A.How parents can help a teen with ADHD.B.The importance of healthy peer relationships.C.How many children are suffering from ADHD.D.Different opinions about treating ADHD inteens.CBrain cells work to actively for
17、get memories during a specific period of sleep.When we sleep our brains clearout the memories weve made while were awake,deciding what to keep and what to get rid of.Forgetting is anactive process,explained the authors of the study published in the journal Science.But less is known about thisprocess
18、 during the different periods of sleep.They found that during the rapid eye movement(REM)sleep period or active sleep when we are thoughtto dream special nerve cells appear to actively contribute to forgetting.What areknown asmelanin-concentrating hormone-producing(MCH)neurons(神经元)sit in the hypotha
19、lamus(下丘脑):a part ofthe brain which helps with a range of functions such as sleep,appetite and emotions.Past research has suggestedthese cells help to control REM sleep patterns:activating the MCH neurons increasing time spentin this period,while preventingthemreducing changes into this period.The s
20、cientists looked at MCH cells in mice,and found 52.8 percent were active during REM sleep,comparedwith 35 percent when the mice were awake.Study co-author Thomas Kilduff,director of the Center forNeuroscience at SRI International,told Newsweek the team was surprised to find that mice performed bette
21、r onlearning and memory tasks when the MCH cells were prevented.“This result suggests that activation of the MCHneurons may affect memory that is,MCH neurons may facilitate forgetting,”Kilduff explained.When asked what motivated the study,Kilduff said,“We hope the work could deepen our understanding
22、 ofAlzheimers disease.Understanding the neural basis of learning and memory is a huge area of neuroscienceresearch because of its effects on our everyday lives,as well as diseases such as Alzheimers disease.Prior to thiswork,no one suspected that MCH neurons had anything to do with forgetting,”said
23、Kilduff.8.What can we infer from paragraph 1?A.Forgetting is a passive process.B.The forgetting process is known to us.C.Some memories are forgotten while we are awake.D.Certain memories are removed while we are asleep.9.What does the underlined word“them”in paragraph 2 refer to?A.REM sleep patterns
24、.B.Past researches.C.MCH neurons.D.A range of functions.10.Why did Kilduffs team conduct the research?A.To publish the study in the journal Science.B.To know more about Alzheimers disease.C.To contribute to humans forgetting.D.To explore our everyday lives.11.What can we know about MCH?A.MCH cells t
25、akes control of REM sleep patterns.B.MCH neurons may disturb memory consolidation.C.MCH neurons have nothing to do with forgetting.D.MCH cells help mice performing better on learning.DEarthquakes are a natural disasterexcept when theyre man-made.The oil and gas industry has forcefullyused the techni
26、que known as hydraulic fracturing(水力压裂法)to destroy sub-surface rock and liberate the oiland gas hiding there.But the process results in large amounts of chemical-filled waste water.Horizontal drilling(水平钻孔)for oil can also produce large amount of natural,unwanted salt water.The industry deals with t
27、his wastewater by pumping it into deep wells.On Monday,the US Geological Survey published for the first time an earthquake disaster map covering bothnatural and“induced”quakes.The map and a report show that parts of the central United States now face aground-shaking disaster equal to the famously un
28、stable terrain(不稳定地形)of California.Some 7 million people live in places easily attacked by these man-made quakes,the USGS said The list ofplaces at highest risk of man-made earthquakes includes Oklahoma,Kansas,Texas,Arkansas,Colorado,NewMexico,Ohio and Alabama.Most of these earthquakes are ly small,
29、in the range of magnitude(震级)3,but somehave been more powerful,including a magnitude 5.6 earthquake in 2011 in Oklahoma that was connected towaste water filling.Scientists said they do not know ifthere is an upper limit on the magnitude of man-made earthquakes;this isan area of active research Oklah
30、oma has had prehistoric earthquakes as powerful as magnitude 7.Its not immediately clear whether this new research will change industry practices,or even whether it willsurprise anyone in the areas of newly supposed danger.In Oklahoma,for example,the natural rate of earthquakesis only one or two a y
31、ear,but there have been hundreds since hydraulic fracturing and horizontal drilling,with thewaste water filling,became common in the last ten years.12.What kind of human activities can cause earthquakes?A.The man-made produced waste water in the factories.B.The process of digging deep wells in those
32、 poor areas.C.The advanced techniques used to deal with waste water.D.The oil or gas industrys work connected with the earth.13.What does the underlined word“induced”in paragraph 2 mean?A.Man-made.B.Reduced.C.Newly-built.D.Controlled.14.How much magnitude can man-made earthquakes reach?A.Its been sa
33、id as small as magnitude 3.B.It has been said as high as magnitude 7.C.Its being studied without a final conclusion.D.It has risen by an average of magnitude 5.6.15.What is the best title for the text?A.Natural Earthquakes in America Are Disappearing NowB.7 Million Americans at Risk of Man-Made Eart
34、hquakesC.Time for Oil and Gas Industry Change Their Working PracticeD.More Often Earthquakes as Powerful as Magnitude 7 in America第二节（共第二节（共 5 5 小题；每小题小题；每小题 2 2 分，满分分，满分 1 10 0 分）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Eyes not only let you see shapes and millions of color1 s,but also help manag
35、e the light signals that keepyour bodys internal clock running properly.Your eyes are among your most important organs,but you shouldnttake your eyes for granted._16_.Protect against eye strain.Sometimes you pose the greatest danger to your eyes._17_.To helpprotect your eyesight and keep healthy eye
36、s,you should take a 15-minute break away from your computer everytwo hours,and rest your eyes every twenty minutes by looking around the room.Your eyes also need sufficientlight to read,write and work on the computer or watch TV.In low light or dark,your eyes have to work harderthan usual,causing st
37、rain._18_.Healthy eyes start with the food on your plate.Nutrients like omega-3 fatty acids,lutein,zinc,andvitamins C and E might help prevent age-related vision problems like macular degeneration(黄斑变性)andcataracts(白内障).To get them,fill your plate with green leafy vegetables and other nonmeat protei
38、n sources.Wear sunglasses with UV(紫外线)Protection.The right pair of shades will help protect your eyes from thesuns UV rays.Too much UV exposure boosts your chances of cataracts and macular degeneration.Choose a pairof sunglasses that blocks 99%to 100%of UVA and UVB rays.Wraparound lenses help protec
39、t your eyes from theside.And Polarized lenses reduce glare while you drive.If you wear contact lenses(隐形眼镜),some offer UVprotection._19_.Use safety eyewear.If you use dangerous materials that can be transported by air on the job or at home,wearsafety glasses or protective goggles(护目镜)._20_.Helmets w
40、ith protective face masks or sports goggleswill protect your eyes.Be smart!Visit your eye doctor periodically and take care of your eyes to keep them healthy.A.Take in enough vitamins.B.Eat well for good eye health.C.Take these easy steps to keep your eyes healthy.D.Sports like ice hockey can also l
41、ead to eye injury.E.But its still a good idea to wear sunglasses for an extra layer.F.Overworked eyes lead to short-term and long-term eye and vision problems.G.So wear sunglasses when youre outside or driving to protect youreyes from UV rays.第二部分第二部分语言运用（共两节，满分语言运用（共两节，满分4545 分）分）第一节（共第一节（共 2020 小题
42、；每小题小题；每小题 1.51.5 分，满分分，满分 3030 分）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It was 15 years ago that one of the most upset things in my life happened.In a clean,clinical room,my bestfriend was dying in my arms.His eyes,dark brown and trusting,would soon_21_forever.Heartbroken,Isaid,“Flash,you_22_so
43、much happiness to me.I will do something good as a(an)_23_.”Flash came into my_24_when I was nine.From the moment my parents brought this cute dog home,he_25_my family with joy.Then,_26_happened.My mum was diagnosed with(被诊断出)breast cancer when I was 11.Then mygrandma,who was my strength,_27_for lun
44、g cancer.My sister_28_Crohns Disease and while beingtested,suffered a heart attack.I was being bullied at school and started to_29_classes and avoid seeingpeople.Flash soon gave me all the comfort he could offer.There were times when I felt there was no_30_,buta pair of brown eyes and loving face wo
45、uld somehow_31_me.I knew he was_32_there for me.Iknew he understood.Now after 15 years,Flash was_33_.I thought doing charity work was the best reward for him.I_34_in a non-profit organization inSouthamptonand contributed about 3,500 hours to_35_childrenwith special needs,which completely changed my
46、life.I learned to love the_36_I had been on,and evenaccept the_37_bits.I still miss Flash.It was he that had somehow_38_me to help others.Flashs death was one ofthe_39_moments of my life.But it was also an inspiring moment that_40_me in the best possiblewayforever.21.A.openB.fadeC.shineD.close22.A.t
47、oldB.broughtC.savedD.owed23.A.rewardB.awardC.bonusD.relief24.A.worldB.roomC.mindD.power25.A.helpedB.protectedC.filledD.decorated26.A.wondersB.storiesC.disastersD.mistakes27.A.went awayB.passed awayC.died awayD.flew away28.A.developedB.causedC.noticedD.gained29.A.passB.skipC.takeD.enjoy30.A.useB.time
48、C.moneyD.hope31.A.annoyB.easeC.liftD.change32.A.frequentlyB.sometimesC.alwaysD.hardly33.A.agingB.desertedC.missingD.gone34.A.searchedB.volunteeredC.competedD.performed35.A.talking aboutB.meeting withC.caring forD.bringing up36.A.earthB.streetC.holidayD.journey37.A.fantasticB.difficultC.awkwardD.plea
49、sant38.A.trainedB.forcedC.inspiredD.persuaded39.A.fullestB.saddestC.tiniestD.craziest40.A.explainedB.admittedC.transformedD.described第二节（共第二节（共 1 10 0 小题；每小题小题；每小题 1.51.5 分，满分分，满分 1515 分）分）阅读下面短文，在空白处填入1 个适当的单词或括号内单词的正确形式Change-5MissionSuccessfully Returns Moon samples to EarthAfter weeks of space t
50、ravel,Chinas Change-5 probe(探测)came to Earth_41._fresh lunar rock andsoil samples on the morning of Dec.17,2020,the returner capsule of_42._landed at the designated landingsite in Siziwang Banner in northChinas Inner Mongolia Autonomous Region.Zhang Kejian,head of_43._China National Space Agency(CNS