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
2014-06-30
21
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://kaotiyun.com/show/8p17777K
0
大学英语六级
相关试题推荐
Politicalplatformsareusuallywrittenforelectioncampaignpurposes,thenquicklyscrappedafterapresidentialelection.But
Knowledgemaybeacquiredthroughconversation,watchingtelevisionortravelling,butthedeepestandmostconsistentwayisth
A、Inthelibrary.B、Inausedbookstore.C、Inthestreet.D、Inahistoricalmuseum.B对话一开始女士便问男士:你喜欢逛二手书店对吧?此后两人又不断提及书的价格。可见他们在二
A、TheimpactofHalloweenonchildrenisunderestimated.B、PeopleusedtocelebratenewyearattheendofOctober.C、Spiritsco
ThinkorSwim:CanWeHoldBacktheOceans?Astheworldgetswarmer,sealevelsarerising.Ithasbeenhappeningatasnai
A、Itforcesonetoformpicturesinthemind.B、Itprovidesmanyinterestingprograms.C、Itteachespeoplehowtoimaginethings
A、Hedidn’tbuyanythingwhileTommyboughtalot.B、Hegotsomemedicineforhishurtingfoot.C、Hetwistedhisfootandcouldn
A、Itmeansyouareinanothercountry.B、Itmeansyouareinabadmood.C、Itmeansyouhavemadeamistake.D、Itmeansyouhave
Themost【B1】______problemcreatedbytherapidincreaseinpopulationisa【B2】______offood.Moremouthshavetobe【B3】______eve
A、Theyareverydangeroustothenearbycommunity.B、Theycanbringrarematerialstothesurface.C、Theyproducemoreheattot
随机试题
鹅因________,宰杀时一定要抓紧,防止其挣扎。
牙本质敏感症对下列哪项刺激最敏感
关于碘对比剂的叙述,错误的是
添附作为财产所有权的取得方法,它是附合、混合、加工的总称。下列关于添附财产的归属的说法,不正确的是()。
根据所给资料,回答下列问题。2014年,该地区生态移民经营净收入占人均可支配收入的比重比农村居民低多少个百分点?()
有甲、乙两瓶质量相同的氯化钠溶液,甲溶液浓度为60%,乙溶液浓度为40%。现将甲溶液倒掉,乙溶液倒掉一半,然后混合在一起,此时得到的溶液浓度约为:
这几年来传统媒体一直唱衰,一些报纸、杂志多挣扎在生存线上,部分出版商虽然坚持在做纸版,但对于未卜的前途也时常感到困惑,独立书店的纷纷倒闭更是不忍多提。而对于读者来说,确实有许多人在过着放下书籍、拿起鼠标和手机的生活。由此,有些人认为,中国人均阅读量明显下降
“先综合,后对比”是编制()的基本思路。[江苏大学2012研]
下列有关类继承的叙述中,错误的是()。
Ifyouhappento______Peter,tellhimtocometomyoffice.
最新回复
(
0
)