2024-2025學(xué)年高中英語Unit3Underthesea單元加餐練課后作業(yè)含解析新人教版選修7

Unit3Underthesea單元加餐練Ⅰ.完形填空Pearls(珍寶)arevaluablewhitegems(珍寶)whichcomefromtheocean.Actuallytheyare1byoysters(牡蠣，蠔)，smallshellfishthatliveonthe2oftheocean.3oysterswillmakepearls;notalloystersproducethem.Oystersproducepearlsonlywhentheyare4bysand.Ifa5ofsandenterstheoyster's6，theoysterbecomeshurtbecausethe7grainofsandirritates(使……不適，刺激)thesmooth,softskinoftheoyster.Theoystertriesto8itselfbyproducingawhite9thatlookslikemilk.Theoystercoversthe10withthemilkyfluid.Thefluidprotectstheoyster.Laterthewhiteliquidbecomes11.Thishardenedliquidformsashell,orbead,aroundthesand.Atthistimeapearlisbeginningto12.Thewhitepearlgrows13insidetheoyster'sshell.14，ittakesaboutsixorsevenyearsfortheoystertoproduceapearl.Notalloystersproducepearls15mostoysterssometimestakesandintotheir16.Onlysandwhichtheoystercannotgetridofwill17it.Inotherwords，ifanoyster“swallows”somesand,itwillmanageto“spititout”．Iftheoystercannotgetridofthe18，thenitwillproducethewhitefluidto19itself.Actually,onlyaboutoneinathousandoysterswillproduceapearl；thatis，20thanonepercent.本文介紹了牡蠣制造珍寶的具體過程。1．A.invented B．broughtC．produced D．caused答案：C解析：produce“生產(chǎn)”，依據(jù)下文“notalloystersproducethem”可知C項(xiàng)正確。2．A.bottom B．baseC．surface D．ground答案：A解析：依據(jù)下文“Oystersproducepearlsonlywhentheyare4bysand.”可知牡蠣生活在海底。3．A.Onlysome B．OnlyfewC．Allof D．Alotof答案：A解析：依據(jù)下文“notalloystersproducethem”可知“不是全部的牡蠣都產(chǎn)珍寶，只有一些能產(chǎn)”。4．A.harmed B．coveredC．destroyed D．injured答案：B解析：依據(jù)上下文的邏輯關(guān)系可知，牡蠣被沙子覆蓋導(dǎo)致沙子進(jìn)入牡蠣殼內(nèi)，這時(shí)牡蠣才會(huì)產(chǎn)珍寶。5．A.piece B．grainC．little D．bit答案：B解析：agrainofsand“一粒沙子”。6．A.shell B．bodyC．eyes D．back答案：A解析：沙子首先進(jìn)入牡蠣的殼內(nèi)。7．A.hard B．vividC．sharp D．rough答案：D解析：上文說牡蠣受到損害，可見沙子是粗糙的。8．A.prevent B．preserveC．protect D．guard答案：C解析：protect“愛護(hù)”。牡蠣是為了愛護(hù)自己才產(chǎn)生一種白色的液體。9．A.water B．matterC．liquid D．object答案：C解析：依據(jù)空格后的“thatlookslikemilk”可知牡蠣產(chǎn)生的東西是一種液體。10．A.injury B．shellC．sand D．pearl答案：C解析：因?yàn)樯匙訐p害了自己的身體，所以牡蠣產(chǎn)生的“themilkyfluid”是把沙子蓋住。11．A.bright B．hardC．strong D．pure答案：B解析：依據(jù)下文“Thishardenedliquidformsashell”可知白色液體隨后會(huì)變硬。12．A.make B．produceC．do D．form答案：D解析：form“形成”。指此時(shí)珍寶起先形成。13．A.slowly B．fastC．safely D．quickly答案：A解析：依據(jù)下文“ittakesaboutsixorsevenyearsfortheoystertoproduceapearl”可知珍寶生長過程是緩慢的。14．A.Often B．ActuallyC．Usually D．Sometimes答案：C解析：usually“通常”。此處指珍寶通常的形成期為6到7年。15．A.eventhough B．incaseC．solongas D．onlyif答案：A解析：eventhough“即使”。盡管大多數(shù)的牡蠣殼內(nèi)有時(shí)會(huì)進(jìn)沙子，但是并非全部殼內(nèi)進(jìn)沙子的牡蠣都產(chǎn)珍寶。16．A.bodies B．shellsC．bottoms D．caves答案：B解析：依據(jù)第6處所在句說牡蠣殼內(nèi)進(jìn)沙子后導(dǎo)致珍寶的形成可知此處也是牡蠣的殼內(nèi)進(jìn)沙子。17．A.destroy B．irritateC．soft D．open答案：B解析：irritate“刺激，使……不適應(yīng)”。此處指“只有牡蠣擺脫不掉的沙子才能刺激它”。18．A.sand B．shellC．milk D．liquid答案：A解析：依據(jù)上文“ifanoyster‘swallows’somesand”可知，牡蠣想擺脫掉的也是沙子。19．A.cover B．destroyC．produce D．protect答案：D解析：依據(jù)上文可知牡蠣產(chǎn)生的“thewhitefluid”是起愛護(hù)作用的。20．A.fewer B．moreC．less D．smaller答案：C解析：依據(jù)“oneinathousand”可知概率不到百分之一，lessthanonepercent“不到百分之一”，lessthan表示“少于”。Ⅱ.閱讀理解Wheneveryoubuysomething,itispossiblethatsomeonehasalreadyworn,eaten,ortestedittomakesureitissafeanddowhatissupposedtodo.Butwhatifyouwantedaspecialsuittokeepasharkfromhurtingyou?Whowantstotestaproductlikeit?“Ido！”saysJeremiahSulliwan,ascientistinCalifornia.“Youhavetobelieveinwhatyousell,right？”SullivanownsSharkArmorTech,acompanythatmakesa$49,400sharksuitthatevenagreatwhitesharkcan'tbitethrough.BeforeSullivancouldsellhissharksuits,heneededtomakesurehisdesignwouldwork.Sullivanputonthesharksuitandjumpedintoasharkfeedingground.“Ineedtoknowexactlywhatahumanbodycouldexpecttogothrough，”hesays.Sharksmovedallaroundhimandthenattackedhisarm.Sullivanfeltthebitebutnoteeth.Hewasuncomfortableattimes,butnotpainful.“Thesuitworks！”“I'venowbeenbittenthousandsoftimesbutneverbadly，”saysSullivan,whonowworkswithshowslikeWildKingdom,andprogramsfortheDiscoveryChannel'sSharkWeek.So,areyouallsettobuyasharksuit?Beforeyoudo,youshouldknowthatthesuitweighs20poundsandmakesswimmingalmostimpossible—notsopracticalforadayonthebeach.Andinfact,Sullivanwantsonlyprofessionals,suchasfilmmakers,scientistsanddivers,tohavesharksuits.Why?Becauseevenifsomeoneiswearingasharksuit,theycouldgetseriouslyhurtiftheytreatdivingwitha4,000-poundsharkasagame.Duringsharksuittesting,sharkshavethrownSullivantoabottomofreefs(礁)andtriedtotakehimoffintothedeepestpartoftheocean.“However，”Sullivansays,“youdon'tneedtobeafraidofsharks.It'sactuallyprettyhardtogetasharktobiteyou.”本文主要介紹了一款防鯊服及其實(shí)際應(yīng)用效果。1．Thefirstparagraphiswrittento.A．startadiscussionB．introducethetopicofthetextC．showthemainpointsofthetextD．testreaders'knowledge答案：B解析：推理推斷題。依據(jù)下文緊接著介紹了Sullivan獨(dú)創(chuàng)的防鯊服以及相關(guān)狀況，由此可見第一段是為了引出本文的話題。2．WhydidSullivangetclosetosharks?A．Toseeifhissharksuitworks.B．Tostudywhatsharksfeedon.C．Tocatchaspecialkindofwhiteshark.D．Tolearnhowtoswimwithsharkssafely.答案：A解析：細(xì)微環(huán)節(jié)理解題。依據(jù)第三段其次句可知他是為了測試他的防鯊服是否有效。3．WhatdoestheunderlinedpartinParagraph5mean?A．Mostpeoplewon'twearthesharksuittothebeach.B．Peopleliketogotothebeachwiththesharksuit.C．Thesharksuitmakesaperfectdayonthebeach.D．Thesharksuitcan'tbewornforawholeday.答案：A解析：句意揣測題。依據(jù)畫線部分的前一句．..thesuitweighs20poundsandmakesswimmingalmostimpossible可知防鯊服太重以至于不行能穿上防鯊服來游泳，因此多數(shù)人不會(huì)穿著它到海灘游玩。故選A。4．Wecanlearnfromthetextthatthesharksuit.A．workswellforswimmersB．islightbutuncomfortableC．keepssharksawayfromhumansD．isdesignedforspecialpurpose答案：D解析：推理推斷題。依據(jù)倒數(shù)其次段第三句可知防鯊服是為特別人群打算的，有特別的用途。Ⅲ.應(yīng)用文寫作近年來，由于海洋污染和過度捕撈，魚的數(shù)量和種類在急劇削減。請就此寫一篇英語短文，給學(xué)校英語廣播站投稿。內(nèi)容要點(diǎn)如下：1.海洋漁業(yè)資源的現(xiàn)狀；2.分析其緣由；3.提出解決問題的方法。留意：1.詞數(shù)80左右；2.可以適當(dāng)增加細(xì)微環(huán)節(jié)，以使行文連貫。Inrecentyears,fishingresourcesintheoceanhavebeenfacedwithaserioussituationwherethequantityoffishandtheirspeciesaredroppingsharply.Itishumanbehaviorthatistoblame.Industrialandagriculturalwastessuchaschemicalsandoilarepouredintotheocean.What'smore，overfishingdestroysthebalanceoflifeintheocean.Tohandlethissituation,thegovernmentshouldmakelawsandpunishthosewhocausepollution.Besides,overfishingshouldbestrictlybanned.Also，somefishermenmaytakeotherjobssothattherearefewerpeoplelivingonfishing.Onlywiththesemeasurestakencanweeventuallypreservefishingresources.Ⅳ.讀后續(xù)寫ItwasMother'sDayandIwasshoppingatthelocalsupermarketwithmysonwhoisfiveyearsold，Tenyson.Aswewereleavingafterfinishingourshopping，werealizedthatonlyminutesearlieranelderlywomanhadfallenoverattheentranceandhitherheadonthegroundbadly.Herhusbandwaswithher，buttherewasbloodeverywhereandthewomanwasembarrassedandclearlyinshock.Fortunately，alotofpeoplestoppedtohelpout.Whilewewerewalkingtowardsthescene，Tenysonbecameveryworriedaboutwhathadhappenedtotheelderlycouple.Hesaidtome，“Mom，it'snotmuchfunfallingoverinfrontofeveryone.”Seeingthattherewasaflowerstall(攤位)atthefrontofthesupermarket，headded，“Whyshouldn'twebuytheladyaflower？Itwillmakeherfeelbetter.”Iwasamazedthathe'dcomeupwiththissweetideawhowasonlyafive-year-oldboy.Sowewentoverandtoldtheflowersellerwhatwewanted.“Justtakeit，”shereplied，“Ican'ttakeyourmoneyforsuchawonderfuldeed.”Bynowmedicalstaffhadarrived，andwerelookingaftertheinjuredwoman.Therewesawtheoldmanwasalsoingreathorror，buthetriedtocomforthiswifeandheldherhandstightlytoencouragehertobestrong.Wegavetheflowertothewoman'shusbandandItoldhimitwasfrommyson.Atthattime，theoldmanstartedcryingandsaid，“Thankyouverymuch.”Hethenturnedtome，“Youhaveawonderfulson.HappyMother'sDaytoyou.”Themanbentdownandgavehiswifetheflower，tellingherwhoitwasfrom.Regardlessofbeingbadlyhurt，theoldladylookedupatTenysonwithloveandappreciationinhereyesandgavehimalittlesmile.Andmysonwentdownhisbodytotheinjuredladyandtenderlysaid，“HappyMother'sDaytoyou，too.”留意：1．所續(xù)寫短文的詞數(shù)應(yīng)為150左