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课时精练：Unit4UsingLanguage课时作业Ⅰ.单词拼写1．Mostschoolsare________(视察)atleastonceayear.2．Hisstoriesusuallyhaveahappy________(结尾)．3．Thehouseisguardedbya________(凶猛的)dog.4．Thetablewascoveredwithalayer(层)of________(灰尘)．5．________(恐龙)wereverylargeanimals，someofwhichcouldclimbtrees.6．What'sthecauseofthis________(事件)?7．Wearepaid________(根据)tohowmuchworkwedo.8．We________(感激)youreffortsforthedevelopmentofthecompany.9．Theyoungermanwill________(接替)Mr.Whiteasdirector.10．Once________(咬)byadogyoushouldgotoadoctor.Ⅱ.阅读理解AChina'sgiantpandashowstheachievementoftheinternationalefforttosaveanimalsthatarenowindanger.Intelevisionprogrammesweoftenseepandasplayingfunnygames.Childrenhavepandatoysandbeautifulcardswithpicturesoflovelypandasinthem.Theyoftenvisitthegiantpandasinthezooontheirholidayandhaveagoodtimethere.However,scientistsareworriedaboutthefutureofgiantpandas.Theyknowonlyabout1，000giantpandasremainalivetoday.Theythinkthegiantpandawilldieoutin30yearsifthepresentconditionsarenotimproved.Itisreportedthatthegiantpandashaveaverylowbirthrate.About115pandasliveinzoosandresearchcentresmainlyinChina,butduringthepasttenyearstheyproducedonly34youngpandasthatarestillalive.Survivalrateforgiantpandasinthewildareprobablythesameorlower.Thereareseveralreasonsforthelowbirthrate.Themainreasonisthatmalepandascanmakelovewithfemalesinaveryshortseason，onlyafewdaysayear.Whentheydohavebabies,femalesoftenproducetwopandas,butthemotherisusuallynotabletocareforbothofthem.Thenew－bornpandasweighonlyafewgramseach.Theyaretooweaktolivewithoutspecialcare.Inthezoo,scientistscanhelpthemotherscarefortheyoungpandas，butthoselivinginthewilddonotgetenoughhelp.Itisverydifficultformotherpandastobringuptheiryoungpandas.Conditionsforthegiantpandashavebeenworseinrecentyears.PandasinChinacontinuetoreduceinnumber.Weknowpandasliveonbamboos.Butsometimesallthebamboosinoneareadie.Thepandastherehavenothingtoeatanddieofhunger.GiantpandasnowliveinthirteenseparateprotectedareasinChina.SeveralyearsagotheChinesegovernmentandtheInternationalWildLifeOrganizationagreedonaprojectofprotectinggiantpandasinthewild.Wehopeitcouldbehelpful.1．Whatdoesthewriterthinkofthegiantpandas?A．Theyarefunny.B．Theyaredirty.C．Theyarelovely.D．Theyarenaughty.2．Accordingtothispassageweknowmostofthegiantpandaslive________．A．inthewildallovertheworldB．inzoosandresearchcentresC．intheareawherethereareplentyofbamboosforthemtoeatD．inthirteenseparateprotectedareasinourcountry3．Scientistsareworriedaboutthefutureofthegiantpandasbecause________．A．sometimesallofthebamboosdieintheareawherethegiantpandasliveandtheyhavenothingtoeatB．giantpandasthatstillliveinthewildcannotgetenoughhelpfromhumansC．onlyasmallnumberofgiantpandasremainalivetodayandtheirbirthrateistoolowD．maleandfemalegiantpandasoftenrefusetomakeloveintherightseason4．Thelowsurvivalrateofyounggiantpandashasmuchtodowiththefactthat________．A．motherpandasareusuallyunabletotakecareofbothyoungpandasbornB．femalepandasareabletohavebabypandasonlyinaspecialtimeC．youngpandasweighonlyafewgramseachandtheyaretooweakD．maleandfemalepandasoftenrefusetohavebabiesintherighttimeBSeveralmonthsago，CCTVbroadcastadocumentary(纪录片)filmaboutcriminals(罪犯)．Irememberedonecriminalclearly：hehadkilledhisgirlfriendjustbecauseshewantedtoleavehim.Thejournalistaskedhim，“Doyouregretkillingyourgirlfriend？”“No.”“Why？”“It'suselesstoregret，”themanansweredcalmly.Thejournalistwassilent.Atthatmoment，Ifeltveryangry.Thismanhadmadesuchanunforgivablemistakebuthestillwouldn'tsayhewassorry.Isregretreallyuseless?Ofcourse，regretisanemotionlinkedtothepastandthisfeelingcannotturnbacktheclock.ButIthinkpeoplewhosayregretisuselessignore(忽视)twopoints.Oneisthatregretisusefulforthefutureandtoone'ssoul.Lookuptheword“regret”inadictionary：therearemanyexpressions，suchas“repent(悔悟)”，“chagrin(悔恨)”andsoon.Alltheseareusedtotellpeoplenottomakesimilarmistakesaftertheyhaverealizedtheirfault.Ifyoudon'tregret，howcanyourepent？Ontheotherhand，forthosesuchasmurderers，whohavealreadylosttheirfuture，regretisstillabaptism(洗礼)forthesoul.Amurdererwon'tleavetheworldatpeacewithhimselfunlessheunderstandswhatregretis.Ihavenodoubtthatregretisavirtue.Justlikealightinthedarkness，itcanofferpeopletherayofhopetheyneed.Nomatterwhatyouhavedonewrong，peoplewillalwaysrespectyouforshowingregretandawillingnesstocorrectyourmistakes.Inthisway，regretisaspecialfeeling.Correctingmistakesisbetterthancomplaining；itmakesyoufeelgoodaboutyourself.Sowhynotshowsomeregretafterdoingsomethingwrong?5．Thewriterfeltveryangrybecauseof________．A．thecriminal'scrimeB．thecriminal'sshortanswerC．thecriminal'snotfeelingsorryD．thecriminal'snotknowinglaw6．Regretisusefulfor________ofthepeoplewhodowrong.A．thefutureB．thepastC．neitherthepastnorthefutureD．boththepastandthefuture7．Ifapersonwhohasdonegreatwrongshowsregret，peoplewill________himatthispoint.A．hateB．dislikeC．lookdownuponD．respect8．Ifamurdererhasalreadylosthisfuture，regretis________forhim.A．uselessB．stillusefulC．hardlyusefulD．almostuselessⅢ.翻译句子1．由于在这次事件中的严重损失，公司陷入重重债务中。(with)_______________________________________________________________