【Manyofusenjoywatchinganimalsintheworld．Butdoyouknowwhattheycanteachus？Geese（雁），forexample，teachaverygoodlessonabout（41）___．Inthefall，Canadageeseflytothewarmsouthto（42）___Canada'scoldwinter】

　　Many of us enjoy watching animals in the world．But do you know whatthey can teach us？

　　Geese（雁），for example，teach a very good lesson about （41）___．In the fall，Canada geese fly to the warm south to

　　（42）___ Canada's cold winter．They lift off in no order．Yet （43）___ they form a V shape，with one bird leading the group．

　　This V shape allows geese to （44）___ energy．When the front bird moves its wings up and down，the resulting force of the air lifts the next one．This continues down the line．The bird （45）___ has the hardest job．When it gets （46）___，it moves behind，and another bird moves into the lead．By sharing the role，the group can travel great distances．Geese flying in a V shape can fly 70percent farther without （47）___ than birds flying alone．

　　During the long flying journey，geese communicate with one another．They honk（鸣叫） to（48）___ the birds up front to keep up the speed．They also cheer each other up （49）___ working toward a common goal．

　　What have we learned from the lovely geese's experience and skills？

　　（50）___ together!Whether it is our personal lives or our jobs，we need other people．We need the spirit of teamwork!

　　41．A．experienceB．successC．friendshipD．teamwork42．A．lookforB．getawayfromC．waitforD．walkawayfrom43．A．busilyB．quicklyC．bravelyD．suddenly44．A．saveB．wasteC．createD．lose45．A．infrontB．atthebackC．inthemiddleD．ontheleft46．A．boredB．tiredC．hungryD．thirsty47．A．restB．sleepC．excuseD．result48．A．leadB．liftC．teachD．encourage49．A．untilB．afterC．whileD．before50．A．PlayB．Travel