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、They can emit a series of pulses, groans, and moans. B、They can cruise the ocean at more than 20 miles an hour. C、They can nav
A、They can emit a series of pulses, groans, and moans. B、They can cruise the ocean at more than 20 miles an hour. C、They can nav
admin
2013-09-26
42
问题
Whales are huge, but difficult to see, which adds to their mystery and fascination. They are highly intelligent animals with an elaborate social life, no possessions and the complete freedom of movement in three dimensions.
Blue Whales are difficult to weigh because of their size, nevertheless, at up to 200 tons, even an " ordinary" sized whale is a vast and impressive creature. Their tongues can weigh as much as an elephant. Their heart weighs as much as an automobile, quite a size!
As their names suggested, blue whales look true blue underwater, but on the surface their coloring is more like blue-gray. Their underbellies take on a yellowish color from the millions of microorganisms that take up residence in their skin.
Blue whales live in all the world’s oceans, occasionally swimming in small groups but usually alone or in pairs. They often spend summers feeding in polar waters and undertake lengthy migrations towards the Equator as winter arrives. These graceful swimmers cruise the ocean at more than five miles an hour, but accelerate to more than 20 miles an hour when they are angry. Blue whales are among the loudest animals on the planet.(35)They emit a series of pulses, groans, and moans, and it’s thought that, in good conditions, blue whales can hear each other up to 1,000 miles away. Scientists think they use these methods not only to communicate , but, along with their excellent hearing, to navigate the lightless ocean depths.
33. Why are blue whales difficult to weigh?
34. Why do we call the animals blue whales?
35. Why can blue whales communicate with each other in a long distance?
选项
A、They can emit a series of pulses, groans, and moans.
B、They can cruise the ocean at more than 20 miles an hour.
C、They can navigate the lightless ocean depths.
D、They can swim very fast and have excellent hearing.
答案
A
解析
文章中提到,它们发出一系列的脉冲和呻吟般的声音,在好的情况下,蓝鲸可以在1 000英里以外的地方听到彼此的声音。科学家认为它们用这种方法相互联系,故答案为A)。
转载请注明原文地址:https://jikaoti.com/ti/8q8FFFFM
0
大学英语六级
相关试题推荐
ThesurveysofERShelplow-incomehouseholdsdevelopeconomizingpractices.Therearethreepossibleexplanationsforthecont
It’softensaidthatplantshiddeninthetangleoftheAmazonianrainforestmayharboranundiscoveredcancercure.JohnRicha
It’softensaidthatplantshiddeninthetangleoftheAmazonianrainforestmayharboranundiscoveredcancercure.JohnRicha
A、Becauseitisdifficulttomaintainamarriage.B、BecausepeoplelikewatchingTVprograms.C、Becausepeoplepreferfreedomto
A、ThechoiceofBaringsFactoryisbetter.B、Thechoiceofthehospitalisbetter.C、Thereisnoneedtochangethetopic.D、The
Theindustrialoutputofthisyearhas______(比去年增加了四倍).
EndYourBackPainLikeanexpensivebuttemperamentalsportscar,thehumanspinisbeautifullydesignedandmaddeninglyu
A、Changetheirjobs.B、Earnmoremoney.C、Reducetheirworkinghours.D、Strengthenthegovernment’srole.CWhatdoesthespeaker
A、Itistherevolutionofthebrain’smemory.B、Itisthechallengeforthebrain’scapacity.C、Itistheactivatorofthebrain
Thescariestpartofbuyingausedcarisnotbeingcompletelysureofwhatconditionit’sin.Acarthat’sbeeninamajoracci
随机试题
说学逗唱:江河湖海
在借贷记账法下,借表示增加,贷表示减少。()
某公司年初股东权益为1500万元,全部付息债务为500万元,预计今后每年可取得息税前利润600万元,每年净投资为零,所得税率为40%,加权平均资本成本为10%,则该企业每年产生的经济增加值为()万元。
看见一株玫瑰花并能认识它,这时的心理活动是()。
设函数f(x)在(一∞,+∞)内具有一阶连续导数,L是上半平面(y>0)内的有向分段光滑曲线,其起点为(a,b),终点为(c,d).记.证明曲线积分I与路径L无关;
请删除当前幻灯片中的一个文本框。
下列程序中通常不属于板级支持包(BSP)内容的是()。
对待排序文件的初始状态不作任何要求的排序方法有()。
[*]
今天我们把汽车当作生活必需品,但是起先汽车只是富人才能买得起的奢侈品。1899制造和出售的汽车只有600辆。
最新回复
(
0
)