首页
登录
职称英语
[originaltext] Whales are huge, but difficult to see, which adds to their my
[originaltext] Whales are huge, but difficult to see, which adds to their my
游客
2024-03-08
64
管理
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 hearts weigh as much as an automobile. Quite a size!
As their names suggest, blue whales look true blue underwater, but on the surface their color is more like blue-gray. Their underbellies take on a yellowish color from the millions of micro-organisms 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. 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 that they use these methods not only to communicate, but, along with their excellent hearing, to navigate the lightless ocean depths.
Questions 9 to 11 are based on the passage you have just heard.
9.Why are blue whales difficult to weigh?
10. Why do we call the animals blue whales?
11.How do blue whales communicate with each other over long distance?
选项
A、By emitting a series of pulses, groans and moans.
B、By cruising the ocean at more than 20 miles an hour.
C、By changing the color of their backs.
D、By giving out yellowish light.
答案
A
解析
短文中提到,它们发出一系列的脉冲、呻吟声和呜咽声,据猜测,在条件好的情况下,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些方法不仅可以相互沟通,加上它们极好的听力,还可以在昏暗的海洋深处前行。因此答案为A)。
转载请注明原文地址:https://tihaiku.com/zcyy/3516834.html
相关试题推荐
[originaltext]W:Andwhendidyoubeginthissortofwork?M:Let’sseenow...
[originaltext]Nowlet’stakealookatsomewaysinwhichwecanincreaset
[originaltext]Everyyear,itcostsBritishstudentsmoreandmoretoattend
[originaltext]W:Ithinkifyouwanttogetsomeexcitementinyourlifeyouou
[originaltext]W:EricSchurenbergisthemanagingeditorofMoneyMagazineint
[originaltext]Lasttimeweweretalkingabouttheneedforadvertising.Now
[originaltext]Lastspring,SteveMcCarronhadhadenough.For10years—sinc
[originaltext]TheInternethascreatedawholenewworldofsocialcommunic
A、Itisrelativelycheapforsomuchpreciousmetal.B、Itisdifficulttojudge
[originaltext]W:Dr.Thomas?ThisisKeetBradleyfromthedailynews.I’dlike
随机试题
【B1】[br]【B5】A、mistakesB、advanceC、improvementsD、weaknessC
CouldyoutellMe______?A、iftheearthWentaroundthesunB、Whathesaidjustno
[originaltext]Maybeyoucarrythemostpowerfulpassportintheworld,orp
EgyptianVillages埃及村落Mostoftheinhabitantsliveinmu
某单位建筑工程初步设计深度不够,不能准确的计算工程量,但工程采用的技术比较成熟而
A.稽留热 B.不规则热 C.弛张热 D.间歇热 E.午后热大叶性肺炎的
某孕妇,被诊断为重度子痫前期,判断目前临床诊断的依据应除外A.尿蛋白定量为2.0
麝香仁粉末用水合氯醛装片,显微观察,可见A.散有方形、柱形或不规则的晶体,并可见
物流的基础设施和装备的完善,涉及整个行业的___布局,即港口、码头、火车、集装箱
施工单位在投标报价中拟采用不平衡报价策略,下列做法中正确的是()。A.总价不变
最新回复
(
0
)