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
2024-03-07
32
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 1000 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
原文中提到,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1000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/3513631.html
相关试题推荐
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
[originaltext]W:TodaywehaveDanielLevitonwithustosharehisopiniononc
[originaltext]W:TodaywehaveDanielLevitonwithustosharehisopiniononc
[originaltext]W:TodaywehaveDanielLevitonwithustosharehisopiniononc
随机试题
Desperatelyshortoflivingspaceand【C1】______pronetoflooding,theNether
StudyinginSydney,Australia—anOverviewforInternationalStudents
[originaltext]W:Let’sgoinhereandordersomecoffeewhilewelookatyourp
A.5.00 B.6.00 C.9.00 D.11.00
地基的破坏形式通常可分为()。A.整体剪切 B.局部剪切 C.刺入剪切
儿童主动、及时地将注意力从一个对象或一个活动转移到另一个对象或另一个活动中去,这
根据《证券公司风险处置条例》,下列关于国务院证券监督管理机构应当履行的监督协调职
男性,55岁。身高175cm,体重70kg,因2个月内体重下降5kg而就诊,查空
只要一个国家的决策者,真心希望发展市场经济,愿意按照资本创造与流动的规律办事,能
由于回购利率较低,故债券回购以小额交易为主。()
最新回复
(
0
)