首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Fighting in Nature In nature, fighting is such an ever-present process that its behavior mechanisms and weapons are highly d
Fighting in Nature In nature, fighting is such an ever-present process that its behavior mechanisms and weapons are highly d
admin
2012-01-14
37
问题
Fighting in Nature
In nature, fighting is such an ever-present process that its behavior mechanisms and weapons are highly developed. Almost every animal capable of self-defense from the smallest upwards fights furiously when it is cornered and has no means of escape. However, in another respect the fight between hunter and hunted is not a fight in the real sense of the word: the stroke of the paw with which a lion kills his prey may resemble the movements that he makes when he strikes his rival, but the inner motives of the hunter are basically different from those of the fighter.
The buffalo which the lion fells provokes his aggression as little as the appetizing turkey which I have just seen hanging in the larder provokes mine.
The difference in these inner drives can clearly be seen in the expression movements of the animal: a dog about to catch a hunted rabbit has the same kind of excited happy expression as he has when he greets his master or awaits some longed-for treat. Growling, laying the ears back, and other well-known expression movements of fighting behavior occur when predatory animals are afraid of a wildly resisting prey, and even then the expressions are only suggested. The opposite process, the counter-offensive, of the prey against the predator, is more nearly related to
genuine
aggression. Social animals in particular take every possible chance to attack the eating enemy that threatens their safety. This process is called "mobbing". The survival value of this attack on the hunter is self-evident. Even if the attacker is small and defenseless, he may do his enemy considerable harm. For example, if a sparrow hawk is pursued by a flock of warning wagtails, his hunting is spoiled for the time being. And many birds will mob an owl if they find one in the day-time, and drive it so far away that it will hunt somewhere else the next night.
In some social animals such as jackdaws and many kinds of geese, the function of mobbing is particularly interesting. In jackdaws, its most important survival value is to teach the young inexperienced birds what a dangerous eating-enemy looks like, which they do not know
instinctively
. For just such educational reasons, geese and ducks may gather together in intense excitement to learn that a fox—anything furry, red-brown, long-shaped and slinking—is extremely dangerous. Besides this didactic function, mobbing of predators by jackdaws and geese still has the basic, original one of making the enemy’s life a burden. Jackdaws actively attack their enemy, and geese apparently intimidate it with their cries, their thronging and their fearless advance. The great Canada Geese will even follow a fox overland in a close phalanx, and I have never known a fox in this situation try to catch one of his tormentors. With ears laid back and a disgusted expression on his face, he glances back over his shoulder at the trumpeting flock and trots slowly—so as not to lose face—away from them. Among the larger, more defense-minded grazing animals which en masse are a match for even the biggest predators, mobbing is particularly effective;
(A) [■] According to reliable reports, zebras will molest even a leopard if they catch him on plain where cover is sparse.
(B) [■] Once, when I was out with my dog, I was obliged to jump into a lake and swim for safety when a herd of young cattle half encircled us and advanced threateningly;
(C) [■] And when he was in Southern Hungary during the First World War, my brother spent a pleasant afternoon up a tree with his Scotch terrier under his arm, because a herd of half-wild Hungarian swine, disturbed while grazing in the wood, encircled him.
(D) [■] Fortunately, the swine dispersed after they confirmed that my brother and his dog were not offensive.
According to Paragraph 3, the process of "mobbing" has survival value, because______.
选项
A、the attacker can kill its enemy in this way
B、the attacker is huge enough to frighten the hunter away
C、the attacker can escape from the hunter by running away
D、the attacker can destroy the hunting and save himself
答案
D
解析
本题是事实信息题,主要看考生能否抓住文章中的重要信息和细节。题目问:根据原文的意思,mobbing(成群暴动)之所以能帮助动物求生,是因为在mobbing的过程中,动物可以破坏敌人的hunting(追逐),即D项的观点。在此过程中,动物并不能杀死它们的敌人(选项A),动物也并非大得足以吓跑敌人(选项B),而且动物不是靠逃跑避开敌人(选项C)。因此,答案为D。
转载请注明原文地址:https://kaotiyun.com/show/fLyO777K
0
托福(TOEFL)
相关试题推荐
Thewritermentionsrainforestsandtheozonelayer
Lookatthefollowingpeople(Questions24-26)andthelistofopinionsbelow.Matcheachpersonwiththecorrectopinion,A-E.Wr
MorseCodeMorsecodeisbeingreplacedbyanewsatellite-basedsystemforsendingdistresscallsatsea.Itsdotsanddashesh
About60%ofpeoplewhouseonlinenetworkingsitesareconcernedthattheirpersonaldetailsmaybeaccessibletopeopletheyd
AncientPeopleinSaharaOnOct.13,2000,PaulSereno,aprofessorfromtheUniversityofChicago,guidedateamofpalaeon
WhichthreeforeignlanguagesaretraditionallytaughtintheUSA?ApartfromChinese,theNEPfocuseson______.
Theprofessorsaysthatsuperhighways______.【27】
Theprofessorsaysthatsuperhighways______.Theprofessorsuggeststhatinfiveyears’time______.
Choosethecorrectletter,A,BorC.MuseumofAnthropology
A、Tothelibrary.B、Tothemovies.C、Toabookstore.D、Toatravelbureau.Awhere’s?the?man?going?now??
随机试题
在查找到相关的文献后,对这些文献进行阅读,称为()
人生的社会价值就是个体的人生对于()的意义。
女童尿路感染发病串高于男童的主要原因
气虚型产后汗证的临床表现有
阿西美辛分散片[处方]阿西美辛30gMCC120gCMS一Na30g淀粉115g1%HPMC溶液适量微粉硅胶3g处方中的填充剂为
男性,50岁,经常发生肾绞痛、血尿,疑为肾结石。需做静脉肾盂造影。造影前准备下列哪项不正确
[2008年,第58题]图4.9-8所示质量为m的三角形物块,其倾斜角为θ,可在光滑的水平地面上运动。质量为m的矩形物块又沿斜面运动。两块间也是光滑的。该系统的动力学特征(动量、动量矩、机械能)有守恒情形的数量为()。
物业管理的制度文书主要有()。
SELECT语句中有子句“WHEREI资额>1000”,该子句的含义是()。
Accordingtothedialogue,whatclassisProf.Greenteaching?
最新回复
(
0
)