概要寫作練習(xí)寫作3則 -高三英語(yǔ)二輪復(fù)習(xí)

概要寫作練習(xí)寫作Flossingyourteethmayprotectagainstcognitivedecline,researchshows

GoodoralhealthhabitslikebrushingandflossingmaypreventcognitiveimpairmentanddementiaaccordingtoanewanalysisledbyresearchersatNYURoryMeyersCollegeofNursing.

Researchersanalyzed14studiesontoothlossandcognitiveimpairmentconductedoveranextendedperiodoftime,whichinvolvedatotalof34,074adultsand4,689casesofpeoplewithdiminishedcognitivefunction.Theresultsshowedthatadultswithmoretoothlosshada1.48timeshigherriskofcognitiveimpairmentand1.28timeshigherriskofdementia,evenwhenotherfactorswerecontrolled.Andwitheachadditionalmissingtooth,theriskofcognitiveimpairmentgrows.

Adultswhoexperiencedtoothlossweremorelikelytohavecognitivedeclineiftheydidnothavedentures（假牙）,thenewresearchalsorevealed.Denturesareimportantbecausetheyallowpatientstomaintainahealthydiet,aswellasprovide“theconfidencetosmilenaturally”,accordingtoDr.JamesWilson,presidentoftheAmericanAcademyofPeriodontology.

Theanalysisalsonotedthattoothlosscouldreflect“l(fā)ifelongsocioeconomicdisadvantages,suchaslimitedaccesstoandqualityofmedicalanddentalcare,feweryearsofeducation,andpoornutrition.”“Incomeandeducationareverymuchrelatedtooralhealth,probablyevenmoresothanmanyotherchronicconditions,”BeiWu,aprofessoringlobalhealthatNYUsaid.Wusaidtheanalysisshouldserveasareminder-----tobothgovernmentsandeverydaypeople---oftheimportanceofmaintaininggoodoralhealthfromanearlyageallthewaythroughtoadulthood.研究表明，用牙線清潔牙齒可以防止認(rèn)知能力下降

紐約大學(xué)羅伊·邁耶斯護(hù)理學(xué)院研究人員領(lǐng)導(dǎo)的一項(xiàng)新分析顯示，良好的口腔健康習(xí)慣，如刷牙和使用牙線，可能會(huì)預(yù)防認(rèn)知障礙和癡呆癥。

研究人員分析了14項(xiàng)長(zhǎng)期進(jìn)行的牙齒缺失和認(rèn)知障礙研究，共涉及34074名成年人和4689名認(rèn)知功能減退的患者。結(jié)果表明，即使在其他因素得到控制的情況下，牙齒缺失較多的成年人發(fā)生認(rèn)知障礙的風(fēng)險(xiǎn)高出1.48倍，患癡呆癥的風(fēng)險(xiǎn)高出1.28倍。隨著每一顆牙齒的缺失，認(rèn)知障礙的風(fēng)險(xiǎn)就會(huì)增加。

如果沒(méi)有假牙，經(jīng)歷過(guò)牙齒缺失的成年人更有可能出現(xiàn)認(rèn)知下降(假牙）,新的研究也揭示了這一點(diǎn)。美國(guó)牙周病學(xué)會(huì)會(huì)長(zhǎng)詹姆斯·威爾遜博士表示，假牙之所以重要，是因?yàn)樗鼈兡茏尰颊弑３纸】档娘嬍?，并提供“自然微笑的自信”?/p>

分析還指出，牙齒缺失可能反映出“終身的社會(huì)經(jīng)濟(jì)劣勢(shì)，如醫(yī)療和牙科護(hù)理的機(jī)會(huì)和質(zhì)量有限，受教育年限短，營(yíng)養(yǎng)不良?！奔~約大學(xué)全球健康教授貝烏（BeiWu）表示：“收入和教育與口腔健康有著密切的關(guān)系，甚至可能比其他許多慢性病更為重要。”。吳說(shuō)，這項(xiàng)分析應(yīng)該提醒政府和普通民眾，從小到成年，保持良好口腔健康的重要性。

參考范文

·Anewresearchclaimsoralhealthhabitshelplowercognitivedeclineanddementiaoccurrenceandhavingdenturesguaranteeshealthydiet,confidentsmile,andreflectspowerfulsocioeconomicstatus,whiletoothloss,resultinginimpairedcognitive,isrelatedtopoorereducation,lowerpay,limitedmedicalcare,andotherdiseases,soforminggoodoralhealthisstronglyrecommendedthroughone’slife.

(60Words)Howbadaree-cigarettesforyou?TheregulatorsatAmerica’sFoodandDrugAdministrationcouldbeforgivenforwantingacigarettebreak.TheyrushedtomeetaSeptember9thdeadlinetodecidewhethermorethan6.5me-cigaretteproductsmadebyover500companiescanremainonthemarket.Whenthedeadlinearrived,theagencyhadmadedeterminationscoveringabout93%oftheproductssubmittedforreview.Itwillblockthesaleofmorethan946,000flavoredproducts.

E-cigaretteshaveattractedkeengovernmentattentioninrecentyears.In2019American’ssurgeon-general（衛(wèi)生局局長(zhǎng)）calledvaping（吸電子煙）anepidemicamongyoungpeople,criticizinginparticularproductswith“kid-friendly”flavors,suchascinnamon（肉桂味）andvanilla.Laterthatyearmorethan450peopleinAmericasufferedfromamysteriousandseverelungillnessthatwaslinkedtovaping.

Othercountries,includingBrazil,IndiaandSingapore,havealreadybannede-cigarettes.Sowhatgoesintothem,andhowbadaretheyreally?

Thedevicesuseanelectricchargetovaporizeadoseofnicotine,oftenaccompaniedbyvariousflavoringchemicals.Nitrosamines（亞硝胺）,acarcinogenicfamilyofchemicals,havebeenfoundine-cigarettevapour,althoughatlevelslowenoughtobedeemedinsignificant.Metallicparticlesfromthedevice’sheatingelement,suchasnickleandcadmium,arealsoaconcern.Highexposuretothesecanincreasetheriskofcancer.

Italsocontainsfreeradicals（自由基）,highlyoxidizingsubstancesthatcandamagetissueorDNA,andwhicharethoughttocomemostlyfromflavorings.Thenthereisnicotine.Besidesaddictive,itisknowntohaveanadverseeffectallaroundthebody.Workinanimalssuggeststhatexposuretonicotineatanearlyagecouldmakeusersmorevulnerabletootheraddictivesubstanceslaterinlife.

電子煙對(duì)你有多壞？

美國(guó)食品和藥物管理局的監(jiān)管者想要休息一下，這是可以原諒的。他們趕在9月9日的最后期限前決定，由500多家公司生產(chǎn)的650萬(wàn)多種電子煙產(chǎn)品能否繼續(xù)留在市場(chǎng)上。截止日期到來(lái)時(shí)，該機(jī)構(gòu)已做出決定，涵蓋了約93%的提交審查的產(chǎn)品。它將阻止超過(guò)94.6萬(wàn)種香料產(chǎn)品的銷售。

近年來(lái)，電子煙引起了政府的高度關(guān)注。2019年美國(guó)衛(wèi)生部長(zhǎng)(衛(wèi)生局局長(zhǎng)）稱為vaping(吸電子煙）在年輕人中流行，特別是批評(píng)帶有“兒童友好”口味的產(chǎn)品，如肉桂(肉桂味）還有香草。那年晚些時(shí)候，美國(guó)有450多人患有一種神秘而嚴(yán)重的肺部疾病，這種疾病與吸食有關(guān)。

包括巴西、印度和新加坡在內(nèi)的其他國(guó)家已經(jīng)禁止電子煙。那么，它們到底是怎么了？它們到底有多糟糕？

這些設(shè)備使用電荷蒸發(fā)一定劑量的尼古丁，通常伴隨著各種調(diào)味化學(xué)品。亞硝胺(亞硝胺）,在電子煙蒸氣中發(fā)現(xiàn)了一系列致癌化學(xué)物質(zhì)，盡管其含量低到可以認(rèn)為微不足道。來(lái)自該設(shè)備加熱元件的金屬顆粒，如鎳和鎘，也令人擔(dān)憂。大量接觸這些物質(zhì)會(huì)增加患癌癥的風(fēng)險(xiǎn)。

它還含有自由基(自由基）,高氧化性物質(zhì)，可損傷組織或DNA，被認(rèn)為主要來(lái)自調(diào)味品。還有尼古丁。除了上癮之外，眾所周知，它對(duì)全身都有不良影響。對(duì)動(dòng)物的研究表明，早期接觸尼古丁可能會(huì)使使用者在以后的生活中更容易受到其他成癮物質(zhì)的影響。參考范文

·America’sF&Dadministrationhaddifficultydecidingwhethere-cigaretteproductscouldremainonthemarketandbythedeadline,with93%submittedonesbannedfinally.

E-cigaretteshasdrawngrowinggovernmentconcernforitspopularityamongyoungpeoplewithminor-friendlyflavor,sincefrequentexposuretonicotine,harmfulchemicals,metallicsubstancesandfreeradicalsfoundinthevapingwillinducelungillnessandcancers.

(60Words)Teslasells“fullself-driving”,butwhatisitreally?

Overtheyears,Teslaownershavepaidasmuchas$10,000forthepackage,calledFullSelf-Driving.FSD,whichcanbepurchasedasanextraonTeslacars,isacollectionofservicesthataddstoTesla’sAutopilot,thedriver-assistancetechnologythatgovernmentinvestigatorsaretakingalookatafterastringofcrashes.

CriticssayFSDhasnotliveduptoitsnamesinceitsdebutmorethantwoyearsago.Thecompanyismakingpromisesthatothercarmakersshrinkfrom,anditscustomersthinktheircarscandomoreontheirownthantheyreallycan.

OtherautomakerslikeArgo,CruiseandWayMohavebeendevelopingandtestingautonomousvehiclesforyears.Ineachcity,theybeginbybuildingadetailed3Dmap.Teslaistakingaverydifferenttack（方針，政策）.Thecompanyanditschiefexecutive,ElonMusk,believethatself-drivingcarscannavigatecitystreetswithout3Dmaps.Afterall,humandriversdonotneedthesemaps;theyneedonlyeyes.

Foryears,Teslahasarguedthatautonomousvehiclescanunderstandtheirsurroundingsmerelybycapturingwhatahumandriverwouldseeastheyspeeddowntheroad.Thatmeansthecarsneedonlyonekindofsensor:cameras.

Giventhespeedofcamerasandthelimitationsinthealgorithmsthatanalyzecameraimages,therearestillsituationswheresuchasetupcannotreactquicklyenoughtoavoidcrashes,saidSchuylerCullen,acomputervisionspecialistwhooversawautonomousdrivingeffortsattheSouthKoreanteachgiantSamsung.特斯拉銷售“全自動(dòng)駕駛”，但它到底是什么？

多年來(lái)，特斯拉車主為這一名為“全自動(dòng)駕駛”的套餐支付了高達(dá)10000美元的費(fèi)用。FSD可以作為特斯拉汽車的額外配件購(gòu)買，它是特斯拉自動(dòng)駕駛儀的一系列服務(wù)，是政府調(diào)查人員在一系列車禍后正在研究的駕駛員輔助技術(shù)。

批評(píng)人士表示，F(xiàn)SD自兩年多前首次亮相以來(lái)，一