高中英语《unit 4 wildlife protection》using language课时作业 新人教版必修21

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1、《Unit4Wildlifeprotection》UsingLanguageⅠ.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，someofwhichcouldclimbtree

2、s.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'sgiantpandashowstheachievementofthe

3、internationalefforttosaveanimalsthatarenowindanger.Intelevisionprogrammesweoftenseepandasplayingfunnygames.Childrenhavepandatoysandbeautifulcardswithpicturesoflovelypandasinthem.Theyoftenvisitthegiantpandasinthezooontheirholidayandhaveagoodtimethere.However,scientistsareworried

4、aboutthefutureofgiantpandas.Theyknowonlyabout1，000giantpandasremainalivetoday.Theythinkthegiantpandawilldieoutin30yearsifthepresentconditionsarenotimproved.Itisreportedthatthegiantpandashaveaverylowbirthrate.About115pandasliveinzoosandresearchcentresmainlyinChina,butduringthepa

5、sttenyearstheyproducedonly34youngpandasthatarestillalive.Survivalrateforgiantpandasinthewildareprobablythesameorlower.Thereareseveralreasonsforthelowbirthrate.Themainreasonisthatmalepandascanmakelovewithfemales5inaveryshortseason，onlyafewdaysayear.Whentheydohavebabies,femalesof

6、tenproducetwopandas,butthemotherisusuallynotabletocareforbothofthem.Thenew－bornpandasweighonlyafewgramseach.Theyaretooweaktolivewithoutspecialcare.Inthezoo,scientistscanhelpthemotherscarefortheyoungpandas，butthoselivinginthewilddonotgetenoughhelp.Itisverydifficultformotherpanda

7、stobringuptheiryoungpandas.Conditionsforthegiantpandashavebeenworseinrecentyears.PandasinChinacontinuetoreduceinnumber.Weknowpandasliveonbamboos.Butsometimesallthebamboosinoneareadie.Thepandastherehavenothingtoeatanddieofhunger.Giantpandasnowliveinthirteenseparateprotectedareas

8、inChina.SeveralyearsagotheChinesegovernmentandtheInter