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
2023-08-24
40
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.
(23)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!
(24)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.(25)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.
23. Why are blue whales difficult to weigh?
24. Why do we call the animals blue whales?
25. 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://tihaiku.com/zcyy/2954856.html
相关试题推荐
[originaltext]Everyfouryears,Americanselectapresident.Accordingtot
[originaltext]Everyfouryears,Americanselectapresident.Accordingtot
[originaltext]NowHarrietBeecherStoweisbestknownforhernovelUncleT
[originaltext]NowHarrietBeecherStoweisbestknownforhernovelUncleT
[originaltext]Childrenhavetheirownrulesinplayinggames.Theyseldomn
[originaltext]Childrenhavetheirownrulesinplayinggames.Theyseldomn
[originaltext]W:Excuseme.I’mlookingforsomeonewhocanhelpmewiththete
[originaltext]W:Excuseme.I’mlookingforsomeonewhocanhelpmewiththete
[originaltext]W:Icanseebyyourresumeherethatyoustudiedbusinessadmini
[originaltext]W:Ijustmadeupaquartoforangejuicethismorning,andnowI
随机试题
[originaltext]W:Oh,no.It’saquartertofivealreadyandI’llmissmy5o’cl
Politicsisanemotionalbusiness.Still,manypeoplefoundthemselvesunusu
A.神经系统 B.淋巴系统 C.生殖系统 D.肌肉系统 E.心血管系统发
李先生家庭收入支出情况如表8—3所示。 表8-3家庭收入支出表 客户:李先生
男性,60岁,持续性上腹部疼痛半年余,消瘦、贫血、乏力,偶有恶心、呕吐。查体呈贫
A.外感风寒,内停水饮 B.肾阳不足,痰饮上壅于肺 C.素有痰热,复感外寒,
流行性腮腺炎的隔离期为A.3周 B.2周 C.腮肿完全消退后3天 D.1周
以下哪项药物调节组织的修复与再生A.川芎 B.延胡索 C.莪术 D.
强制拍卖的基本原则指( )。A.法院处置权限定原则 B.法院任意处置原则
一类风湿关节炎患者,病程持续1年余,有对称性多关节肿痛,未经治疗,三大常规及肝肾
最新回复
(
0
)