4．There are many kinds of amazing animals in the world．Have you ever watched one of them-Canada geese （雁）？They can teach us a lesson about teamwork（合作）．
In autumn，Canada geese have to fly to the warm south to get away from Canada'cold winter．When they leave the ground and rise into the air，they fly in no order．Then they quickly form a V shape，with one bird leading the group．
The V shape allows Canada geese to save energy．The head bird moves its wings（翅膀） up and down．The resulting（产生的） force of the air help lift the next bird．Each bird will do so until they get to the southern part．The bird at the head of the group has the hardest job．When it gets tired，another bird moves to the front and takes its place （代替它）．By sharing this job，the group can travel great distances．Canada geese flying in a V shape can fly seventy percent farther without having a rest than the birds flying alone．
During the long flying journey，Canada geese communicate with one another，They honk（鸣叫） to encourage the birds up front to keep up the speed．They also cheer one another up while working toward the same destination．
What have we learned from the lovely Canada geese's experience and skills？
Work together!Whether in our personal lives or our jobs，we need the spirit of teamwork!
根据短文内容判断正、误．
（注意：考生将答题卡相应位置涂黑．正确的涂"A"，错误的涂"B"）
41．Because of Canada's cold winter，Canada geese have to fly to the warm south in autumn．A
42．When the heard bird gets tired，another bird moves to the front and becomes an new head bird．A
43．Canada geese flying in a V shape can fly seventeen percent farther without having a rest than the birds flying alone．B
44．During the long flying journey，Canada geese hardly cheer one another up while working toward the same destination．B
45．From the passage，we've learned that the spirit of teamwork is important to us．A．
