小學(xué)詞匯教案
發(fā)表時間:2020-11-14Book7詞匯復(fù)習(xí)練習(xí)題集。
Book7詞匯復(fù)習(xí)練習(xí)題集
Unit1LivingWell
一.根據(jù)所給漢語或所給首字母,寫出單詞的正確形式。
1.Hisa__________istobecomePrimeMinsterislikelytoberealized.
2.Iquitelikelivingalone,becauseitmakesmemore_______________(獨立).
3.Shewasgiven____________(鼓勵)totrysomethingnew.
4.Ishowmysincerecongratulationsonyourg_____________fromBeijingUniversity.
5.Mye_________daughterisatuniversitynowbuttheotheroneisatschool.
6.I_____________(祝賀)youonyourelection.
7.Sunshineis_____________(有益)toplants.
8.Hefrownswhenheis______________.(頗為生氣)
9.JohnandMikearetwins,butthel___________istallerthantheformer.
10.Moneym__________nothingtoher.
11.Everyoneofusshouldtryourbesttohelppeoplewith____________.(傷殘)
12.Thenewcomerswhoaren’tfamiliarwiththeirjobneedadviceand__________(幫助).
13.LiHuawasmyonlyChinese_______________(同伴)duringmystayinAustria.
14.Hewas__________(傷殘)inthecaraccident.
二.根據(jù)所給漢語完成下列句子
1.MrGreenwillbeincharge______________________(在我離開期間).
2.Itwasthefirsttimethatshe___________________.(獨立生活)
3.Aboywhois____________________(有雄心)usuallyworkshard.
4.I’mgladtosee_______________(你在校的行為)hasimproved.
5.__________________________(我感到生氣)whenherefusedtohelp.
6.他的休假已產(chǎn)生了有益的效果。(beneficial)
_____________________________________________________________
7.這本書適用于初學(xué)者。(adaptfor)
8.我們期待著畢業(yè)。(graduation)
9.由于缺乏證據(jù),警方只好放他走。(absence)
10.我們會幫助你找到住的地方。(assistin)
11.Herunhappychildhoodis______________________.(她性格的關(guān)鍵)
12._______________________(我怎么能坐著無所事事)whentherearesomanythingstodo.
13.Myfatherissittingonthesofa______________________________(看書).
14.Thedistricthas_____________________(呈現(xiàn)出一派新面貌)sincethenewroadswerebuilt.
15.He___________________(謀生容易)eversincehisfatherdiedandlefthimthebusiness.
Unit2Robots
一.根據(jù)所給漢語或所給首字母,寫出單詞的正確形式。
1.Theplanefliessos___________thatwecanrestwellduringthetrip.
2.Theythen____________(宣布)tousallwhathadbeendecided.
3.Iamreally_____________(擔(dān)心)tohearthatyou’replanningtoleavethecompany.
4.Itwas__________(荒謬)ofyoutosuggestsuchathing.
5.Thewholecountrycelebratedthev_________ofthewar.
6.Tomistooyoungunderstandsuchc___________problem.
7.It’swellknownthatMozarthadat___________formusic.
8.Everycitizenshouldo__________thelaw.
9.Theygotmarriedin1999andd__________thenextyear.
10.Snowis______________(缺少)insomecountries.
11.AnEnglishgirlwillfeel____________(窘迫)whenyouaskhowoldsheis.
12.Youshouldn’t______________(嫉妒)himhissuccess.
二.根據(jù)所給漢語完成下列句子
1.Asmallboysawthesmokeand___________________.(發(fā)出警報).
2.Shealwaystirestoavoidbeing_____________________.(和杰克單獨相處)
3.Britainhaslotsofits________________(足球天才)toclubsabroad.
4.Father____________________(把報紙放在一邊)andreachedforhiscigarettesandlighter.
5.______________________(警方自稱)tobecompletelypuzzledbythelackofevidence.
6.The0millionloanwillhelp________________________.(使俄羅斯經(jīng)濟好轉(zhuǎn))
7.______________________(真是荒謬)nottowearacoatinsuchcoldweather.
8.We_______________________(渴望得到你盡早的回復(fù))tothismatter.
9.Thesoldierswill____________________(被考驗)underthestressofwar.
10.Duringthefirstfewmonths________________________________(一切進(jìn)展地很順利).
11.我不忌妒你有好運氣。
12.你最好別碰鋼琴。(leave…alone)
13.Itisonethingtoworkoutaplananditisanotherto____________________(執(zhí)行它)
14.Thedam_________________________(將要建成)bytheyear2010,willbenefitthewholecountry.
15.Shetoldmethatherproposalneeded_________________.(考慮)
16.Ifeelitisyourhusbandwhois_____________________(被譴責(zé))forthespoiledchild.
Unit3Underthesea
一.根據(jù)所給漢語或所給首字母,寫出單詞的正確形式。
1.Theywereinan________________(令人畏懼)silence.
2.The____________(年度)farmoutputistobeincreasedby4-5percent.
3.Thedoctorwillbeheresoon;inthem___________,tryandrelax.
4.Areyoua__________thatyoursonhasdifficultyinstudyingatschool.
5.Onew__________claimedtohaveseenthegun.
6.TheRussianarmyhadasuccessfule_________intothecity.
7.Hetoldussomeamusinga____________abouthislifeinthecountryside.
8.HecanspeakEnglishwell,buthismothert__________isGerman.
9.Thishospitalhas_____________(住宿)for200patients.
10.The______________(關(guān)系)betweenthetwocountriesisbeingimproved.
二.根據(jù)所給漢語完成下列句子
1.ManyGermanartists__________________(逃到美國)atthebeginningofWorldWarII.
2.Janicelayonthefloortrembling,___________________(太害怕所以不能動)。
3.Therearefourpeople___________________(在我前面)atthedoctor’s.
4.Allthatstressatworkhadbegunto_____________________________(使他的健康情況變壞)andhewasbadlyinneedofaholiday.
5.Thenationalguardhas___________________(被調(diào)動)tohelpfightfires.
6.He_________________(正要離開)whenhisfathercamein.
7._____________________(有一段時間)whenanumberofpupilsstayedawayfromschoolwithoutpermission.
8.Idon’tremember___________________(你告訴過我)thatyouweregoingtobealawyer.
9.Iamhappytoseemygrandmother__________________.(被照顧)。
10.Allflights_______________________(都被取消了)becauseofthesnowstorm,wedecidedtotakethetrain.
Unit4Sharing
一.根據(jù)所給漢語或所給首字母,寫出單詞的正確形式。
1.Ourmembershavethe__________(特權(quán))ofusingthelendingserviceofthelibrary.
2.The___________(宇航員)soongetusedtotheconditionofweightlessness.
3.Theforeignfriendshopethattheycanjointhecelebrationsfortheuniversity’s80th____________(周年紀(jì)念).
4.WhatIneednowisthe_____________(安全)ofahappyhome.
5.Mailcomestothisr__________villageonlyonceaweek.
6.Heisbeingtreatedataprivatec_____________.
7.Thistypeofuniversitycourseisnolongerr____________totoday’sproblems.
8.Itissaidthatthiscompanyisinseriousf_____________difficultiesnow.
9.I’llmake___________(安排)foryoutobemetattherailwaystation.
10.Inmyopinion,theseare_____________(政治)ratherthansocialmatters.
二.根據(jù)所給漢語完成下列句子
1.Hesaidhe____________________(從未遇到)suchafunnyperson.
2.Icouldseeapairoffeet____________________(伸出)attheendoftheblanket.
3.Everyonewasaskedto____________________(捐贈一天的收入)Children’sHospital.
4.Ididn’tknowyouwouldgetupat6:00,_____________________(不然我會來得更早)。
5.Thecoursewillhelpyoutodevelopyour_______________________.(閱讀與聽力技能)
6.Ittookseveralsecondsforhiseyesto_______________________.(習(xí)慣黑暗)。
7.Thegovernmentencouragespeopleto___________________(參與)protectingandimprovingtheenvironment.
8.如果我是你,我就接受了這份工作。(if)
___________________________________________________________________
Unit5TravellingAbroad
一.根據(jù)所給漢語或所給首字母,寫出單詞的正確形式。
1.DoAmericansneedv________tovisitCanada?
2.Experienceinarelatedfieldisa______________(要求)forthisjob.
3.Itake____________(安慰)fromthefactthathisfriendsaretheretohelphim.
4.Passengersmayb__________theshipat4:00p.m.
5.Moneyisnos_____________forhappiness.
6.Britainisg___________byPrimeMinisterandtheCabinet.
7.Wasgoingtocollegeagoodp____________foryourcareer?
8.Thecountryisa____________innaturalresources.
9.Theteacherr_____________thestudentstoreadthefollowingbooks.
10.Thestudentsattendedahistoryl_______________today.
11.Therailwaylinesrunp_____________totheroad,sotheywillnevermeet.
12.Readingo_________mostofmysparetime.
13.Manyofthepoor_____________(認(rèn)為)himastheirspiritualleader.
二.根據(jù)所給漢語完成下列句子
1.TheBrownswill______________________(給你供應(yīng)膳食)quitecheaply.
2.Coffeeisnotservedhere.Wehaveto____________________________.(用茶代替咖啡)
3.________________________(就我而言),thisstoryisnotinterestingatall.
4.I_______________________(感覺自在)livinghere.Thelandladyisverykindtome.
5.He___________________________(很快使自己適應(yīng)了)theheatofthecountry.
6.He___________________________(被廣泛承認(rèn))asbeingthebestplayerintheworld.
7.We______________________________(建議早點預(yù)訂),asthiseventispopular.
8.Withoutself-control,amancanhavenopatience,nopowerto____________.(支配自己)。
9.Heexperiencedgreatdifficultyin_______________________(申請出國簽證)。
10.Theteacherrefusedto________________(對……做出評論)theexaminationresults.
11.Imustgetridofthelargedesk;it_______________________(占據(jù)太大的空間)
12.Shemadethechildrenglad__________________________(用各種方法)
13.Thejournalistimmediatelysetouttogettheseimportantfacts,buthe______________(花了很長時間)tosendthem.
14.要適應(yīng)另一國家的風(fēng)俗習(xí)慣是很困難的。(getusedto)
15.我和保羅有許多的共同點。
Unit1LivingWell
一.1.ambition2.independent3.encouragement
4.graduation5.elder6.congratulated
7.beneficial8.annoyed9.latter
10.means11.disabilities12.assistance
14.companion15.disabled
二.1.duringmyabsence2.hadlivedindependently
3.filledwithambition4.yourconductatschool
5.Ifeltannoyed6.Hisholidayhashadabeneficialeffect.
7.Thisbookisadaptedforbeginners.
8.We’relookingforwardtograduation.
9.Intheabsenceofevidence,thepolicehadtolethimgo.
10.We’llassistyouinfindingsomewheretolive.
11.thekeytohercharacter.
12.HowcanIsetaround
13.readingbooks
14.takenonaflash
15.hadlittledifficultyinmakingaliving(合同范本網(wǎng) 36GH.com)
Unit2Robots
一.1.smoothly2.announced3.alarmed
4.absurd5.victory6.complicated
7.talent8.obey9.divorced
10.absent11.embarrassed12.envy
二.1.raisedthealarm2.leftalonewithJack
3.footballtalents4.setasidethepapers
5.Thepolicedeclaredthemselves6.turntheRussianeconomyaround
7.It’sabsurd8.desireyourearlyreply
9.betestedout10.everythingwentsmoothly
11.Idon’tenvyyouhavinggoodluck12.You’dbetterleavethepianoalone.
13.carryitout14.tobecompleted
15.tobetakenintoconsideration16.toblame
Unit3Underthesea
一.1.awesome2.annual3.meantime
4.aware5.witness6.entry
7.anecdote8.tongue9.accommodations
10.relationship
二.1.fledtoAmerica2.tooscaredtomove
3.aheadofme4.draghimdown
5.beencalledout6.wasabouttoleave
7.Therewasatime8.yoursayingtome
9.hasbeentakencareof10.havingbeencancelled
Unit4Sharing
一.1.privilege2.astronaut3.anniversary
4.security5.remote6.clinic
7.relevant8.financial9.arrangements
10.political
二.1.hadnevercomeacross2.stickingout
3.donateoneday’spay4.otherwise,Iwouldhavecomeeasier
5.readingandlisteningskills6.adjusttothedark
7.participatein8.IfIwereyou,Iwouldhavetakenthejob.
Unit5TravellingAbroad
一.1.visas2.requirement3.comfort
4.board5.substitute6.governed
7.preparation8.abundant9.recommended
10.lecture11.parallel12.occupied
13.acknowledge
二.1.boardyou2.substitutecoffeewith/bytea
3.AsfarasIamconcerned4.feelathome
5.adjustedhimselfveryquicklyto6.iswidelyacknowledged
7.recommendedbookearly8.governhimself
9.gettingavisatoleavethecountry10.commenton
11.takesuptoomuchroom12.inavarietyofways
13.tookalongtime
14.It’sdifficulttogetusedtoanothercountry’scustoms.
15.IhavealotincommonwithPaul.
相關(guān)推薦
導(dǎo)數(shù)及其應(yīng)用復(fù)習(xí)學(xué)案練習(xí)題
§1導(dǎo)數(shù)及其應(yīng)用復(fù)習(xí)(1)
一、知識點
1.
2.
3.思想方法:①以曲代直;②逼近思想.
二、基礎(chǔ)訓(xùn)練
1.與是定義在上的兩個可導(dǎo)函數(shù),若滿足,則與滿足.
2.函數(shù)的導(dǎo)數(shù)為.
3.已知曲線上過點的切線方程為,則實數(shù)的值是.
4.設(shè)質(zhì)點的運動方程是,則質(zhì)點的瞬時速度=.
5.下列等于1的積分是.①;②;③;④.
6.的值為.
7.設(shè),則等于.
8.若,且,則的值是.
三、典型例題
例1.求下列函數(shù)的導(dǎo)數(shù):
⑴;⑵;⑶;⑷
例2.若,且,求.
四、鞏固練習(xí)
1.已知函數(shù)與的圖象都過點,且在處有公共切線,求的表達(dá)式.
2.汽車以36km/h的速度行駛,到某處需要減速停下.設(shè)汽車以等減速剎車,問:從開始剎車到停車,汽車走了多長距離?
五、課堂小結(jié)
六、課后反思
七、課后作業(yè)
1.若對任意的,有,則此函數(shù)解析式為.
2.已知,則=,=,=.
3.曲線的切線中,斜率最小的切線方程為.
4.設(shè),則等于.
5.曲線與坐標(biāo)軸所圍成的面積是.
6.函數(shù)在上有最大值和最小值.
7.若,則的大小關(guān)系是.
8.若,則的最大值是.
9.函數(shù)的導(dǎo)數(shù)為.
10.已知,且,求的值.
11.一輛汽車的速度一時間曲線如圖,求該汽車在這1min行駛的路程.
《促織》練習(xí)題
《促織》練習(xí)題
一、常識及內(nèi)容理解。1.《促織》是《聊齋志異》中的名篇,作者,字,別號,清代杰出的小說家?!傲凝S”是指,“志”即,“異”是。2.《聊齋志異》是中國文學(xué)史上由劉義慶《》志人志怪小說開創(chuàng)的筆記小說的高峰,成名后出現(xiàn)了一系列仿作,其中尤以紀(jì)昀的《》和袁枚的《》最出名。3.作者在文中把失蟲和失子安排在一起,這是一種手法,作者采用這種手法的目的是
。4.課文中有兩個幻想的情節(jié),即及,它們在文中的作用是
。二、字、詞、句。(一)解釋加點的詞1.宮中尚促織之戲,歲征民間2.此物故非西產(chǎn)3.試使斗而才
4.昂其直,居為奇貨5.輒傾數(shù)家之產(chǎn)6.邑有成名者,操童子業(yè)
7.遂為猾胥報充里正役8.會征促織9.死何裨益10.成然之
11.靡計不施,迄無濟12.旬余,杖至百13.成妻具資詣問14.唇吻翕辟
15.各各竦立以聽16.無毫發(fā)爽17.青麻頭伏焉18.得無教我獵蟲所耶
19.與村東大佛閣逼似20.成益愕,急逐趁之21.雖連城拱璧不啻也
22.斯須就斃23.而翁歸24.未幾25.如被冰雪26.既而得其尸于井
27.夫妻向隅28.則又超忽而躍29.審諦之30.成以其小,劣之
31.村中少年好事者32.徑造廬訪成33.顧念蓄劣物終無所用
34.屢撩之,蟲暴怒35.蟲翹然矜鳴36.旋見雞伸頸擺撲37.掇置籠中
38.蟲盡靡39.獻(xiàn)諸撫軍40.細(xì)疏其能41.無何,宰以卓異聞
42.又囑學(xué)使俾入邑庠43.一人飛升,仙及雞犬。信夫44、又期月
45.劣弱不中于款46.不如拼博一笑47.冥搜未已48.民日貼婦賣兒(二)區(qū)別詞的不同意義和用法1.過①過故人莊②裘馬過世家焉③雷霆乍驚,宮車過也④則智明行無過矣⑤過秦論⑥一日,大母過余曰⑦求,無乃汝是過與?(三)指出加點詞各屬哪類活用1.以促織富,裘馬揚揚2.成述其異,宰不信3.市中游俠兒得佳者籠養(yǎng)之4.成然之三.閱讀做題(1994年高考上海卷試題)
曹南院知鎮(zhèn)戎軍①日,嘗出戰(zhàn)小捷。虜兵引去。瑋偵虜兵去已遠(yuǎn),乃驅(qū)所掠牛羊輜重,緩驅(qū)而還,頗失部伍。其下憂之,言于瑋曰:“牛羊無用,徒縻軍,不若棄之,整眾而歸?!爆|不答,使人候。虜兵去數(shù)十里,聞瑋利牛羊而師不整,遽襲之?,|愈緩行,得地利處,乃止以待之。虜軍將至近,使人謂之曰:“蕃軍②遠(yuǎn)來,必甚疲。我不欲乘人之怠,請休憩士馬,少選③決戰(zhàn)?!碧敺娇嗥I酰孕廊?,嚴(yán)軍歇。良久,瑋又使人諭之:“歇定,可相馳矣?!庇谑歉鞴能姸M(jìn),一戰(zhàn)大破虜師。
遂棄牛羊而還。徐謂其下曰:“吾知虜已疲,故為貪利以誘之。比其復(fù)來,幾行百里矣。若乘銳便戰(zhàn),猶有勝負(fù)。遠(yuǎn)行之人若小憩,則足痹不能立,人氣亦闌,吾以此取之。”[簡注]①曹南院知鎮(zhèn)戎軍:曹指曹瑋;南院,官名,是南院宣徽使的略稱;知鎮(zhèn)戎軍,出任鎮(zhèn)戎軍的主管長官。②蕃軍:對外族軍隊的稱呼,即文中的“虜兵”。③少選:待一會兒。1.解釋:①徒②縻③候④諭⑤比⑥幾
2.從詞類活用的角度看,與其余三項不同的一項是()
A、虜方苦疲甚B、頗失部伍C、恥學(xué)于師D、是故明主貴五谷而賤金玉
3.翻譯:聞瑋利牛羊而師不整
4.曹瑋用什么計謀“一戰(zhàn)大破虜師”?
參考答案:
一、1.蒲松齡,字留仙,別號柳泉居士,清代杰出小說家,書房名,記,鬼狐花仙。
2.世說新語;閱微草堂筆記;子不語
3.作者在文中把失蟲和失子安排在一起,這是一種對照手法,作者采用這種手法的目的是通過兒子的生命竟然比不上蟋蟀的生命這一鮮明的對照來反映勞動人民在封建制度統(tǒng)治下所受的摧殘,以及由此造成的反常的心理狀態(tài)。
4.問卜得蟲;成子魂化小蟲;從情節(jié)發(fā)展角度看,這兩個幻想的情節(jié)沖破了現(xiàn)實生活的限制,推動了情節(jié)的發(fā)展。從表現(xiàn)主題方面看,成名走投無路只得將解脫苦難的希望寄托在神明身上,由此可見社會的黑暗無道;而成子自盡后還要魂化促織以供玩賞,才能解脫一家的苦難,這就更加表現(xiàn)出平民百姓所受迫害之深。
二、(一)、(三)略
(二)過:拜訪;超過;經(jīng)過;過錯、錯誤;指出……過錯;探望;指責(zé)
三、參考答案:1。白白地;束縛,牽累;偵察;告訴;等到;差不多;2。B;3。得知曹瑋貪牛羊之利而部隊散亂;4。引誘敵人勞師遠(yuǎn)襲,誘敵人“小憩”而使其“足痹”。
單調(diào)性學(xué)案練習(xí)題
作為優(yōu)秀的教學(xué)工作者,在教學(xué)時能夠胸有成竹,作為教師就要在上課前做好適合自己的教案。教案可以讓學(xué)生更好的吸收課堂上所講的知識點,幫助教師掌握上課時的教學(xué)節(jié)奏。教案的內(nèi)容具體要怎樣寫呢?下面是小編精心收集整理,為您帶來的《單調(diào)性學(xué)案練習(xí)題》,歡迎您參考,希望對您有所助益!
§1.3.1單調(diào)性
一、知識點
1.導(dǎo)數(shù)與函數(shù)的單調(diào)性有什么關(guān)系?
設(shè)函數(shù),如果在某個區(qū)間上,那么為該區(qū)間上的增函數(shù);
如果在某個區(qū)間上,那么為該區(qū)間上的減函數(shù).
2.思考:試結(jié)合思考:如果在某區(qū)間上單調(diào)遞增,那么在該區(qū)間上必有嗎?
二、典型例題
例1.確定函數(shù)在哪個區(qū)間上的增函數(shù),哪個區(qū)間上是減函數(shù).
例2.確定函數(shù)在哪些區(qū)間上是增函數(shù).
例3.確定函數(shù)的單調(diào)減區(qū)間.
例4.確定函數(shù)的單調(diào)區(qū)間.
三、鞏固練習(xí)
1.函數(shù)的單調(diào)減區(qū)間是.
2.函數(shù)在上單調(diào)遞增,則的取值范圍是.
3.函數(shù),在是單調(diào)的.(填“遞增”、“遞減”)
4.討論函數(shù)的單調(diào)性:
⑴⑵⑶
四、課堂小結(jié)
五、課后反思
六、課后作業(yè)
1.已知,且,則函數(shù)在上單調(diào)遞.
2.函數(shù)的單調(diào)遞增區(qū)間是.
3.函數(shù)的遞增區(qū)間是,遞減區(qū)間是.
4.函數(shù)的遞增區(qū)間是.
5.已知,證明:
⑴在上是增函數(shù);⑵當(dāng)時,.
6.已知,證明:.
7.求函數(shù)單調(diào)區(qū)間.
8.已知函數(shù)在其定義域內(nèi)是增函數(shù),求的取值范圍.
導(dǎo)數(shù)及其應(yīng)用復(fù)習(xí)課導(dǎo)學(xué)案及練習(xí)題
題型一分類討論思想在導(dǎo)數(shù)中的應(yīng)用
例1設(shè)函數(shù)f(x)=2x3-3(a-1)x2+1,其中a≥1.
(1)求f(x)的單調(diào)區(qū)間;(2)討論f(x)的極值.
跟蹤1設(shè)函數(shù)f(x)是定義在[-1,0)∪(0,1]上的偶函數(shù),當(dāng)x∈[-1,0)時,f(x)=x3-ax(a為實數(shù)).
(1)當(dāng)x∈(0,1]時,求f(x)的解析式;
(2)若a3,試判斷f(x)在(0,1]上的單調(diào)性,并證明你的結(jié)論;
(3)是否存在a,使得x∈(0,1]時,f(x)有最大值1?
題型二轉(zhuǎn)化與化歸思想在導(dǎo)數(shù)中的應(yīng)用
例2設(shè)f(x)=ex1+ax2,其中a為正實數(shù).
(1)當(dāng)a=43時,求f(x)的極值點;(2)若f(x)為R上的單調(diào)函數(shù),求a的取值范圍.
跟蹤2如果函數(shù)f(x)=2x2-lnx在定義域內(nèi)的一個子區(qū)間(k-1,k+1)上不是單調(diào)函數(shù),則實數(shù)k的取值范圍是________.
題型三數(shù)形結(jié)合思想在導(dǎo)數(shù)中的應(yīng)用
例3求函數(shù)f(x)=x3-3ax+2的極值,并說明方程x3-3ax+2=0何時有三個不同的實根?何時有唯一的實根(其中a0)?
跟蹤3已知f(x)=ax3+bx2+x(a、b∈R且ab≠0)的圖象如圖所示,
若|x1||x2|,則()
A.a0,b0B.a0,b0
C.a0,b0D.a0,b0
【達(dá)標(biāo)檢測】
1.當(dāng)a取下列哪個值時,函數(shù)f(x)=2x3-9x2+12x-a恰好有兩個不同的零點()
A.8B.6C.4D.2
2.設(shè)函數(shù)f(x)=ax2+bx+c(a,b,c∈R),若x=-1為函數(shù)f(x)ex的一個極值點,則下列圖象不可能為y=f(x)的圖象的是()
3.函數(shù)f(x)的定義域為R,f(-1)=2,對任意x∈R,f′(x)2,則f(x)2x+4的解集為()
A.(-1,1)B.(-1,+∞)C.(-∞,-1)D.(-∞,+∞)
4.設(shè)函數(shù)f(x)=kx3-3x2+1(k≥0).
(1)求函數(shù)f(x)的單調(diào)區(qū)間;(2)若函數(shù)f(x)的極小值大于0,求k的取值范圍.