训练16 2阅读理解＋阅读填空＋语法填空(建议用时30分钟)Ⅰ.阅读理解A
Howcanacreatureweighingover 5 tonsandnormallytaking 150 kilogramsoffoodand 120 litersofwaterperdaysurviveinadesertenvironment?
InthesouthwestAfricancountryofNamibia，andtheSaharalandsofMalifurthernorth，thedesertelephantdoesjustthat．
AlthoughnotregardedasaseparatespeciesfromtheAfricanelephant，thedesertcousindiffersinmanyways.Theirbodiesaresmaller，toabsorblessheat，andtheirfeetarelargerforeasierwalkingacrosssandysurfaces.Theyaretaller，toreachhigherbranches.Theyhaveshortertusks (象牙)gforwaterinriverbeds.
Desertelephantscantravelover 70 kilometersinsearchforfeedinggroundsandwaterholes，andhavealargergroupoffamilies.Theydrinkonlyevery 34 days，andcanstorewaterina “bag” atthebackoftheirthroat，whichisonlyusedwhenbadlyneeded.Desertelephantsare
carefulfeeders－theyseldomrootuptreesandbreakfewerbranches(粪便) ofthefemaleleaderof
agroupwhenfacingfoodshortage.Duringdroughttheyareunlikelytogivebirthtotheiryoung
butwithgoodrainsthebirthratewillincreasegreatly.Desertelephantshavesandbaths(尿液) tomakethemmuddy!urweakplanet，itcanonlybehopedthatotheranimalspecies
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