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
A、By means of echo location. B、With the help of moonlight. C、By means of vision and smell. D、With the aid of daylight vision. A文
A、By means of echo location. B、With the help of moonlight. C、By means of vision and smell. D、With the aid of daylight vision. A文
admin
2022-03-24
74
问题
The saying "blind as a bat" simply isn’t correct. The truth is that all 1,100 bat species can see and often their vision is pretty good, although not as excellent as other night-hunting animals.
There are two main groups of bats, which are believed to have evolved independently of each other, but both from a common ancestor. The first group, known as "mega bats", are mostly medium-sized or large bats who eat fruits, flowers, and sometimes small animals or fish. These species have distinctive visual centers and big eyes. They use senses of vision and smell to capture their prey. For example, Flying Foxes not only see well during daylight, but can also distinguish colors. They actually rely on their daylight vision and cannot fly during the night with no moonlight. The second group, called "micro bats", are smaller in size and mostly eat insects. These species use echo location to find their way and identify food. Scientists have proven that despite their poorly developed small eyes, these bats still can see during the day. When we consider the nightly lifestyle of these bats, we will see they have to be sensitive to the changing light levels because this is how they sense when to start hunting. Moreover, vision is used by micro bats to travel over long distances beyond the range of echo location.
So the truth is, there are no bats which are naturally blind. Some species use their sense of hearing more than their eyes as a matter of adaptation to a particular lifestyle, but their eyes are still functional.
9. What do we learn about mega bats?
10.How do micro bats find their way and identify food?
11.Why do some species of bats use their sense of hearing more than their eyes?
选项
A、By means of echo location.
B、With the help of moonlight.
C、By means of vision and smell.
D、With the aid of daylight vision.
答案
A
解析
文章中间部分介绍了第二类蝙蝠,即微型蝙蝠,指出这些物种使用回声定位来寻找方向并识别食物 (use echo location to find their way and identify food)。因此选项A正确。使用视觉和嗅觉来捕捉猎物的是巨型蝙蝠,选项C张冠李戴,故排除;文章在介绍巨型蝙蝠时,举了狐蝠的例子,指出这种蝙蝠实际上依靠昼视觉,在没有月光的夜间则无法飞行,因此选项B、D也属于张冠李戴,均排除。
转载请注明原文地址:https://kaotiyun.com/show/Tyx7777K
0
大学英语六级
相关试题推荐
UsingdatafromaresearchstudythattookplaceintheU.K.whichaskedfamiliestoreportontheirdiets,theteamfoundthat
A、Thegiftcard’svaliditytimeisshort.B、Thegiftcardhasafewchancestouse.C、Shoppershavetopaygiftcardfees.D、The
HowPovertyChangestheBrainA)Yousawthepicturesinscienceclass—aprofileviewofthehumanbrain,sectionedbyf
Forthispart,youareallowed30minutestowriteashortessayentitledSeizeEveryChancebycommentingontheremark"Oppo
Forthispart,youareallowed30minutestowriteashortessayentitledRelationshipBetweenOne’sMajorandFutureJob.You
Googlerecentlyintroducedanewservicethataddssocial-networkingfeaturestoitspopularGmailsystem.Theserviceiscalled
A、Organisingprotests.B、Recruitingmembers.C、Actingasitsspokesman.D、Savingendangeredanimals.A根据选项,可以预测本题询问某人的工作内容。男士说他在
A、Europeancountriestendtosupporthavingnaps.B、Workingmenshouldhaveanapregularly.C、Adultsaremorelikelytodevelop
A、Amapofloop.B、Photosofseaanimals.C、Twopipesforplaying.D、Amusicbox.B根据原文,名为“SoapBubbleSet”的作品里包含了一些海洋生物的照片。故答案是
A、Therearemorenewtypesofwriters.B、Newtopicshavebeendevelopednowadays.C、Itistoldwithdifferentwordsanduniquev
随机试题
下列机关单位中,可以设立中国共产党党组的是()
导致老年男性排尿困难最常见的疾病是
治疗水肿湿毒侵淫证,应首选
A.可增加出血倾向B.导致肾功能损害发生率增加C.可致中枢神经过度抑制D.可致横纹肌溶解E.可导致血压骤降氨基糖苷类与强利尿剂合用()
当工程管线交叉敷设时,自地表向下的排列顺序依次为()。
拆除工程施_工中,()等均属于施工必须建立安全技术档案。
中国证监会及其派出机构依法履行职责进行检查时,检查人员不得少于3人,并应当出示合法证件和处罚决定书。()
关于招聘申请表的说法,正确的是()。
在西柏坡时期,党中央:①领导了解放区的土改运动;②召开了党的七届二中全会;③组织指挥了辽沈、淮海、平津三大战役。上述历史事件出现的先后顺序是()。
二进制数6554对应的十进制数是
最新回复
(
0
)