单元练习高一年级英语单元练习九内容必修二Unit 4Word格式文档下载.docx

单元练习高一年级英语单元练习九内容必修二Unit 4Word格式文档下载.docx

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一、阅读理解

A

Thepoaching，orillegalkilling，ofrhinos（犀牛）inSouthAfricaisgrowingworseeachyear.Thegovernmentrecentlyreportedthatarecordnumberofrhinoswerepoachedin2014，ayearwhichhadmorerhinoskillinginSouthAfricathaneverbefore.

TheWorldWildlifeFund，orWWF，saysabout20,000rhinosliveinSouthAfrica.Thatismorethan80percentoftherhinosintheworld.EdnaMolewa，SouthAfrica’sEnvironmentMinister，says，“During2014，wearesadtosaythis,1,215rhinoswerekilled.Thisisariseinthenumberofpoachedrhinosfrom1,004in2013andindeedveryworrying.”

Theanimalsarehuntedfortheirhorns（角）．ManypeopleinAsiabelievethehornhascuringpower，whichdrivespoachers，atallcosts，madformorehorns.Butthereisnoscientificevidenceforthisbelief.Thehornismadeofkeratin.Thatisthesamethingashumanhair，fingernailsandtoenails.

Ms.Molewasaid386suspectedpoacherswerearrestedlastyear，anincreasefromtheyearbefore.Butrhinoprotectionworkerssaypoachersoftengounpunishedafterarrest.SouthAfrica’slegalsystemisineffective.Ms.MolewasaidmoreneedstobedoneandSouthAfricaistakingstrongmeasurestoprotectrhinos.Theeffortsincludemovingsomeoftheanimalstosecretplacesinneighboringcountries.“Nowapproximately100rhinoshavebeenmovedtoneighboringstatesintheSADCregionduring2014and200morerhinoswillbemovedthisyear，”Molewasaid.

JoShaw，therhinoprogrammanagerattheWWF，said，“We’retalkingaboutalossofahundredrhinosamonth，ormorethanthreeaday.Wereallyneedtoseeeffectiveactionnotjustatanationallevelbutinternationally.”Shesaysofficialsshouldfindthecriminalgroupsresponsibleforthepoachingandpunishthem.GovernmentofficialsaretomeetinBotswanainMarchattheIntergovernmentalConferenceonIllegalWildlifeTrade.

1．Whatdoweknowaboutrhinos?

A．HalfofrhinosliveinSouthAfrica.

B．Lessthan1,000rhinoswerekilledin2013.

C．Thekillingreachedthehighestpointin2014.

D．Thereareonly20,000rhinosleftintheworld.

2．Whatisthemainreasonforpeopletohuntrhinos?

A．Togetmorekeratin.

B．Toprotectthefarmland.

C．Tousethemfordecoration.

D．Tomakemoneyfromhorns.

3．JoShawthinksthat________.

A．manycriminalgroupsarewellorganized

B．newlawsareneededtopunishthekillers

C．rhinoprotectionneedsinternationalcooperation

D．conferencesaboutprotectingrhinosaretobeheldeveryyear

4．Whatcanweinferfromthetext?

A．Rhinoprotectionhasalongwaytogo.

B．Noonewouldliketobuyhornsinthefuture.

C．Theillegalkillingofrhinoswillsoondisappear.

D．RhinoslivinginSouthAfricawillmovetoothercountries.

B

Thelongerateenagerspendsusingelectronicdevicessuchascomputersandsmartphones，theworsetheirsleepwillbe，astudyofnearly10,00016to19yearoldssuggests.

Morethantwohoursofscreentimeafterschoolwasstronglylinkedtobothdelayedandshortersleep.AlmostalltheteensfromNorwaysaidtheyusedthedevicesshortlybeforegoingtobed.Manysaidtheyoftengotlessthanfivehourssleepanight.

Theteenswereaskedquestionsabouttheirsleeproutineonweekdaysandatweekends，aswellashowmuchscreentimetheyclockedupoutsideschoolhours.Onaverage，girlssaidtheyspentaroundfiveandahalfhoursadaywatchingTVorusingcomputers，smartphonesorotherelectronicdevices.Andboysspentslightlymoretimeinfrontofascreen—aroundsixandahalfhoursaday，onaverage.Playingcomputergameswasmorepopularamongtheboys，whereasgirlsweremorelikelytospendtheirtimechattingonline!

Anytypeofscreenuseduringthedayandinthehourbeforebedtimeappearedtodisturbsleep—makingitmoredifficultforteenagerstonod_off.Andthemorehourstheyspentonthesedevices，themoredisturbedtheirsleepbecame.Whendaytimescreenusetotaledfourormorehours，teenshada49%greaterriskoftakinglongerthananhourtofallasleep.Theseteensalsotendedtogetlessthanfivehoursofsleeppernight.

Dr.Hysingsaidherfindingshadsuggestionsforthewiderpopulationassomanypeopleusethesedevices.“Weknowthatsufficientsleepisessentialforgoodphysicalandmentalhealth.Loggingoffmaybeoneimportantsteptowardsecuringagoodnight’ssleep.”

ProfRussellFoster，anexpertattheUniversityofOxford，said，“Thisisanimportantstudyasitprovidespracticalevidencethattheuseofelectronicdevicesbeforebeddoesindeedreducesleepduration.”Hesaidteenagersshouldbewarnedofthis.

5．Whatisstressedinthefirsttwoparagraphs?

A．Teensnowtendtohavemoreproblemswithstudies.

B．Teensgethardertofallasleepwithmorescreentime.

C．Teensaddictedtoscreenarelikelytobemoreenergetic.

D．Teens’sleepdurationhasnothingtodowith