9.Next autumn when you see wild geese heading south for the winter flying in a V formation,you might think about what scientists have discovered as to why they fly that way.
As each bird flaps its wings,it creates uplift(提升) for the bird immediately following.By flying in a V formation the whole group adds at least 71% greater flying range than if each bird flies on its own.
People who share a common direction and sense of community can get where they are going more quickly and easily because they are traveling on the push of one another.
When a wild goose falls out of the formation,it suddenly feels the drag and resistance of trying to go alone and quickly tries to get back into the formation to take advantage of the lifting power of the bird in front.When the head goose gets tired,it flies back into the formation and another goose flies to the front.It is wise to take turns doing difficult jobs whether it is people or wild geese flying south.
Wild geese honk (發(fā)出雁叫聲) from behind to inspire those up front to keep up their speed.What can we learn from this?
When a wild goose gets sick or wounded by gunshots,and falls out of the formation,two other geese will fall out with that goose and follow it down to lend help and protection.They will stay with the fallen goose until it is able to fly or until it dies,and only then will they go on with their own or with another formation to catch up with their group.
24.Wild geese fly in a V formation in order toB.
A.protect themselves from danger
B.fly more quickly and easily
C.help the sick and wounded
D.fly much higher in the sky
25.What can we learn from the fifth paragraph?B
A.We should try to lead others to move forward.
B.We should give people facing difficulties encouragement.
C.We should believe in those who offer us help.
D.We should care more about the old and sick.
26.When a wild goose becomes sick or is wounded,C.
A.it will be left alone and will fall on the ground
B.the whole group will stop flying
C.two other geese will stay with it to offer help
D.other geese will honk to give it encouragement
27.What do we know from the passage?A
A.A wild goose can help the one following it by flapping its wings.
B.A person who works alone can work better than one who doesn't.
C.It is not good for wild geese to take turns being the head goose.
D.The wild geese that fall behind are unlikely to catch up with their group.
分析 本文是一篇說明文.介紹了大雁南飛習慣排成V字行隊伍,關于這個課題,科學家作了調查研究,發(fā)現(xiàn)大雁的飛行方向與其群體感和群體方向有關.
解答 24.B 細節(jié)辨析題.By flying in a V formation the whole group adds at least 71% greater flying range (航程) than if each bird flies on its own."以V字飛行能使整個團體比單個的行程多至少百分之71";故答案為B.
25.B 推理判斷題.根據(jù)第五段Wild geese honk (發(fā)出雁叫聲) from behind to inspire those up front to keep up their speed."野生大雁從后面發(fā)出叫聲鼓勵前面的大雁保持速度."根據(jù)句意聯(lián)想到人類社會,可知答案為B.
26.C 細節(jié)理解題.根據(jù)句子:When a wild goose gets sick or wounded by gunshots,and falls out of the formation,two other geese will fall out with that goose and follow it down to lend help and protection."一旦有只野雁生病或是受了槍傷跟不上隊伍,那么兩只野雁將會退出隊伍陪伴這只野雁,并給予幫助和保護."故答案為C.
27.A 推理判斷題.根據(jù)句子When a wild goose falls out of the formation,it suddenly feels the drag and resistance of trying to go alone and quickly tries to get back into the formation to take advantage of the lifting power of the bird in front當一只大雁從編隊中掉下來時,它突然感覺到了,很快地試圖回到編隊中,利用前面鳥的升力.可見雁可以通過拍打翅膀來幫助跟隨它的人.所以答案選A.
點評 閱讀理解題測試考生在閱讀基礎上的邏輯推理能力,要求考生根據(jù)文章所述事件的邏輯關系,對未說明的趨勢或結局作出合理的推斷;或根據(jù)作者所闡述的觀點理論,對文章未涉及的現(xiàn)象、事例給以解釋.考生首先要仔細閱讀短文,完整了解信息,準確把握作者觀點.