且养分器官变得肥厚多汁，以便自身贮藏水分；猴面包树生长在非洲东部的热带草原里，成龄大树一般高约25米，而直径却达5米，有的甚至超过10米；远远望去，如同巨大的酒瓶；在干旱的时候，树上不长叶子；到了雨季，才开头长叶，开花，结果；同时大量吸取水分，贮藏在肥胖的树干里，以备旱季之用；生长在墨西哥沙漠的仙人掌像一座座巨大的烛台，通常有10—15米高，粗得一个人都难以合围，体内水分竟达95%以上；在它巨大的身躯里，能贮藏一吨以上的水；当旅行者缺水时，打开它的躯干，就可以饮到清亮的淡水；因此，它享有“沙漠里的甘泉”之美名；④强大多样的根系是植物抗旱的保证；干旱的草原降水量极少，能潮湿土壤的表面，下层的土壤却很干燥；这些地方生长的根茅，水分蒸发极快，雨水往往只隐子草和沙蒿，都长着入土不深，分枝极多，平铺在土表层的根系；沙拐枣的垂直根系较浅，水平根系就长达十几米，只要地面有一点点水分，它就能充分吸取；在干旱的沙漠地区，有的植物地上部分大大缩小，地下部分却大大增加，主根扎得很深；一株不到半米高的白刺，主根长13米多，侧根长6米以上，根幅14米，相当于冠幅的⑤忍耐干旱是植物的抗旱生理物征；前，表现出反常顽强的生命力；1，选文第一段写“一项好玩的试验”30多倍！有了这样的生理特点，才使得有些植物在严酷的干旱面，其用意是什么？（2分）引出说明对象，引起读者的阅读爱好；2，依据文段内容，为第③段横线处补写一个恰当的句子；贮藏水分以备不测是植物抗旱的绝技；3，选文运用的主要的说明方法是什么？有什么作用？（举例子，真实具体地说明白植物种种神奇的抗旱本领；（3分）3分）LearnGeneralSecretaryon"twotolearna"strengthening"fourConsciousnesses"importantspeechcausedastrongreactioninthecountry.ime,watching"redtreasure",theoriginofbuildingthepartybacktopower,howtostrengthenservicesforthemasses,improvepartycohesion,fightingtobecomethegrass-rootspartymembersandmasseshottopic.Grass-rootspartyorganizations"two"istostrengthentheserviceofpartymembersandcadres,thepioneerspirit.Distributionofgrass-rootspartyorganizationsinallwalksofpeople,clothing,shelter,whichbelongstothenerveendingsofthepartyorganizationandcommentsreputationhasadirectperceptionofthemasses.Strengthenthepartyaheadofthe"pedal"spirit;strengthenthepartymembersandcadres"successdoesnothavetobeme"and"thefirsttobearhardships,thelastto"servicespirittosettheparty'spositiveimageamongthepeopleisimportant.Grass-rootspartyorganizations"two"istocleansealpeoplenothappynottosee"stereotypes",establishthehonestfaithful,diligentfaithforthepeople.Noneedtoavoidmentioningthat,somemembersofourpartycannotstandthe"money,"corrosionoftemptation,thin,XuZhou,suchabuseandcorruptbribery,malfeasanceborers,andrats.Two,istocleanup,thin,Xu,Zhou'ssolutiontorestoretheparty'sfreshandnatural,solidandhonestworkstyle.Cleansing"take,eat,card,"undesirableandbehaviour,"cross,hardandcold,push"attitude.Grass-rootspartyorganizations"two"istostrengthenthesenseofordinarypartymembers,participatinginconsciousness,unityconsciousness.Forreasonsknown,membersofgrass-rootspartybrancheslessmobile,lessresources,andtheconstructionofpartyorganizationshavesomelag.Twostudies,istofocusonthegrass-rootspartybranches"loose,soft,loose"problem,advancethepartymembersandcadres,"agangworking","HongKongreport."Strongcleanupactions,stylandrambling,presumptuous"unqualified"partymembers,paysspecialattentiontopartymembersandcadres"joiningpartyofthought"problem."Partybuilding"isobtainedinthelong-termdevelopmentofourparty'shistoricalexperienceaccumulated.Twoisourpartyunderthenewhistoricalconditions,strengthentheparty'sconstructionofanew"rectificationmo...