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
Many of the most flexible examples of tool use in animals come from primates(the order that includes humans, apes, and monkeys).
Many of the most flexible examples of tool use in animals come from primates(the order that includes humans, apes, and monkeys).
admin
2014-01-13
60
问题
Many of the most flexible examples of tool use in animals come from primates(the order that includes humans, apes, and monkeys). For example, many wild primates use objects to threaten outsiders. But there are many examples of tool use by other mammals, as well as by birds and other types of animals.
Tools are used by many species in the capture or preparation of food. Chimpanzees use sticks and poles to bring out ants and termites from their hiding places. Among the most complex tool use observed in the wild is the use of stones by Ivory Coast chimpanzees to crack nuts open. They select a large flat stone as an anvil(a heavy block on which to place the nuts)and a smaller stone as a hammer. Stones suitable for use as anvils are not easy to find, and often a chimpanzee may carry a haul of nuts more than 40 meters to find a suitable anvil. The use of tools in chimpanzees is especially interesting because these animals sometimes modify tools to make them better suited for their intended purpose. To make a twig more effective for digging out termites, for example, a chimp may first strip it of its leaves.
Surprisingly, there is also a species of bird that uses sticks to probe holes in the search for insects. One of the species of Galapagos finch, the woodpecker finch, picks up or breaks off a twig, cactus spine, or leaf stem. This primitive tool is then held in the beak and used to probe for insects in holes in trees that the bird cannot probe directly with its beak. Birds have been seen to carry twigs from tree to tree searching for prey.
Tools may also be used for defense. Hermit crabs grab sea anemones with their claws and use them as weapons to repel their enemies. Studies have demonstrated that these crabs significantly improve their chances against predators such as octopus by means of this tactic. Also, many species of forest-dwelling primates defend themselves by throwing objects, including stones, at intruders.
According to the passage, Ivory Coast chimpanzees are among the most remarkable of animal tool users because they______.
选项
A、use tools to gather food
B、use more than one tool to accomplish a task
C、transport tools from one place to another
D、hide their tools from other animals
答案
B
解析
根据文章第二段第三、四句“Among the most complex tool use observed in thewild is the use of stones by Ivory Coast chimpanzees to crack nuts open.They select a large flatstone as an anvil(a heavy block on which to place the nuts)and a smaller stone as a hammer."可知,作者提到在野外观察到的动物使用工具,最复杂的场景就是黑猩猩使用石头敲碎坚果。为什么作者认为这一场景是最复杂的,因为猴子不止使用了两种工具,而且还考虑到什么样的石头适合作为铁砧。因此是最值得注意的。据此判断,答案是B。
转载请注明原文地址:https://kaotiyun.com/show/zIQO777K
0
考博英语
相关试题推荐
FormanyyoungpeopleduringtheRoaringTwenties,adisgustwiththeexcessesofAmericanculture______awanderlusttoprovok
Youshouldspendnomorethan20minutesonthistask.Youandyourfamilyhaddinnerinarestaurantafewnightsago.The
Resistancetothe1954UnitedStatesSupremeCourtdecisionterminatingsegregationplacedtheschoolsinthemiddleofahitter
Beans,peasandlentilsareinthelegumefamilyandareexcellentfoodchoices.Legumesarehealthycomplexcarbohydrates,full
Bacteria(细菌),likepeople,canbedividedintofriendandfoe.61.Inspiredbyevidencethatthefriendlysortmayhelpwitha
Thebusinessofadvertisingistoinventmethodsofaddressingmassiveaudiencesinalanguagedesignedtobeeasilyaccessible
Hewasconcernedonlywithmundanematters,especiallythedailystockmarketquotations.
Now,morethanever,itdoesn’tmatterwhoyouarebutwhatyoulooklike.Janetwasjusttwenty-fiveyearsold.Shehadag
ThehistoryofAfrican—Americansduringthepast400yearsistraditionallynarrated【1】anongoingstruggleagainst【2】andindiffe
Ifincomeistransferredfromrichpersonstopoorpersonstheproportioninwhichdifferentsortsofgoodsandservicesarepro
随机试题
作为一名高中教师,上好一堂课至少应该做到()。
心包经的起止穴是()
最有助于室速诊断的是
我国对发展热电联产的总热效率要求年平均大于()。
进行生态环境调查时,自然植被经常需进行现场的样方调查,样方调查中首先须确定样地大小,灌木样地的面积一般在()以上。
现行会计制度统一规定了各行业()的编码。
如果想了解压力容器安全状况等级评定标准,应查阅()。
债务人或者第三人有权处分的权利中可以出质的有()。
根据以下资料回答相关问题。材料1现在,我们党是在国际形势深刻变化、国际竞争日趋激烈、国内改革开放日益深化的条件下带领人民搞社会主义现代化建设的。深刻变化的国际国内环境,给党员队伍和党的自身建设带来了深刻影响,使保持和发展党的先进性既面临许多新情况
定义了二维数组A(2to6,4),则该数组的元素个数为()。
最新回复
(
0
)