版Unit 3 A healthy life单元综合测评Word文件下载.docx
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版Unit 3 A healthy life单元综合测评Word文件下载.docx
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每小题2分,满分30分)
阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。
A
Dolphinsliveinadarkunderwaterworld.It'
softenimpossibletoseeeachotheroranythingelsearoundthem,sosoundplaysanimportantroleintheirsurvival.Tocommunicatewitheachother,dolphinsproduceallkindsofsounds.
Onlyotherdolphinsunderstandwhatthesoundsmean.Scientistshaven'
tuncoveredtheirsecretcommunication,exceptforonekindofwhistle.Itmightlastlessthanasecond,butthiswhistleisabigdeal.Why?
Becausethesewhistlesareactuallynamesofdolphins-andeverydolphinhasone.Scientistscallthesesoundsa“signaturewhistle.”Whenotherdolphinshearthewhistle,theyknowwhichdolphiniscalling.
Dolphinsoftenhuntbythemselvesbutstillneedtostayconnectedtothegroup.Sincetheycan'
talwaysseeeachother,dolphinsusetheirsignaturewhistlestocheckinwithotherdolphinshundredsofyardsaway.“Incoastalareas,dolphinsexchangewhistlesevenwhenthey'
reathirdofamileapart,”saysGregCampbell,whostudiesanimals.Thatmeansdolphinsshoutouttogroupmembersthatmightbenearlyfivefootballfieldsaway.
What'
samazingiswhonamesthebabydolphin.Notthemother.Notanauntiedolphinoranothergroupmember.Scientistsbelievethebabydolphinitselfcomesupwiththesignaturewhistle.Likehumanbabies,ababydolphinplayswithsoundsthroughoutitsfirstyear.Whiletestingitssoundskills,ababydolphinisdoingsomethingamazing.It'
screatingorfiguringoutitssignaturewhistle.Howorwhyitchoosesitssignaturewhistleisnotclear.Studiesshowthatmostofthetimethesignaturewhistleisnothinglikeitsmother'
sorgroupmembers'
whistles.
Whenthebabydolphinisaboutayearold,itssignaturewhistleisset.Itrepeatsitoftensotheotherdolphinslearntorecognizeit.
Deciphering(破译)dolphinnamesisjustthebeginningoffiguringoutwhatdolphinscommunicateabout.Dotheychataboutsharks?
Discussthetides?
Maybetheyevenhaveanameforpeople.Somedayscientistsmaydeciphertherestofdolphins'
communication.
1.Soundisimportantfordolphinsbecauseof______.
A.theirpoorsenseofdirection
B.theirlivingenvironment
C.theirstrongenemies
D.theirbiggroups
【解析】 细节理解题。
根据第一段的“Dolphinsliveinadarkunderwaterworld.It'
softenimpossibletoseeeachotheroranythingelsearoundthem,sosoundplaysanimportantroleintheirsurvival.”可知,海豚生活在黑压压的水下,什么也看不到,这决定了它们得用声音进行交流。
【答案】 B
2.Thedolphin'
ssignaturewhistle________.
A.lastsalongtime
B.cantravellongdistances
C.isespeciallyhelpfulinhunting
D.canberecognizedbyotheranimals
根据第三段的“dolphinsexchangewhistlesevenwhenthey'
reathirdofamileapart”和“shoutouttogroupmembersthatmightbenearlyfivefootballfieldsaway”可知,这种哨音可以传播很远。
3.Theauthorwritesthetextmainlyto________.
A.encouragereaderstostudydolphins
B.tellreadershowdolphinscommunicate
C.showhowlovelyandcleverdolphinsare
D.introduceaspecialsoundmadebydolphins
【解析】 推理判断题。
根据第二段的“Scientistshaven'
tuncoveredtheirsecretcommunication,exceptforonekindofwhistle”和最后一段可知,本文是要向读者介绍海豚发出的一种奇特声音的含义。
【答案】 D
4.Ababydolphingetsitsname________.
A.soonafteritwasborn
B.accordingtoitssize
C.allbyitself
D.withthehelpofitsgroup
根据第四段的“ababydolphinplayswithsoundsthroughoutitsfirstyear.Whiletestingitssoundskills,ababydolphinisdoingsomethingamazing.It'
screatingorfiguringoutitssignaturewhistle.”可知,小海豚的名字是根据它自己发出的哨音确定的。
【答案】 C
B
WorkingwomenmakeupnearlyhalfoftheU.S.workforce,and51percentofprofessionalworkers,likedoctors,lawyers,nursesandaccountants,arefemale.Whileclimbingthecareerladdercanberewarding,itoftencomeswithonebigdownside:
weightgain!
NewresearchpublishedthisweekintheInternationalJournalofObesityshowsthatworkingwomenaremorelikelytobeoverweight,andthemoreyouwork,themorepoundsyou'
relikelytopileon.Likemanywomen,Iwork...,alot!
Asaselfemployednutritioncommunicationsspecialist,Isitatmydesk,infrontofacomputer,forhoursonend.Sittingaloneisoneoftheworstthingsyoucandoforyourhealth,andit'
sdirectlylinkedtobeingoverweightandincreasedfatness,sothefactthatwomenintheworkforcegainweightisn'
tthatsurprising.Ifyouwork,youhavelesstimetomovearound.Obesityresearchersarerevealingmanyotherwaysthatemploymentisharmfultoyourdietandwaistline.
IntheInternationalJournalofObesitystudy,some9,276Australianwomenaged45-50hadtheirbodyweightandemploymentstatusmonitoredfortwoyears.Results?
Thosewhoworkedmorethan35hourswerelikelytogainweightcomparedtothosewhoworkedfewerhoursorwereoutoftheworkforce.What'
smore,themorehoursawomanworkedinaweek
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