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The Most Extreme Animals

时间:2006-11-12 16:00来源:互联网 提供网友:linquans   字体: [ ]
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The Most Extreme Animals

Earth is a planet of extremes, extreme places and extreme animals, but some animals are more extreme than others. Join us as we count down to find the most unusual and the most extraordinary on “The Most Extreme”!

The Fastest Runner: The Tiger Beetle1

You can find the most extreme 1)speedster almost anywhere on earth. It may be the fastest thing on six legs. The tiger beetle is a pocket rocket, the fastest insect on earth, and probably one of the most 2)ferocious2.

So just how fast is a tiger beetle? If you put a tiger beetle on a racetrack it would 3)sprint3 at the same speed as a human out for a 4)brisk walk. Now, eight kilometers per hour doesn’t sound very extreme, but imagine if it was the same size as a human — it would take only half a second to win the 100 metre sprint! To catch a beetle moving at over 480 kilometres per hour, we’d need a 5)drag racer!

But there’s a problem with being the fastest sprinter4 on the planet. Tiger beetles5 run so fast they go blind. Those enormous eyes work well when the beetle sits still but once the beetle starts running, its eyes can’t process information fast enough to see its surroundings. The tiger beetle is the number one most extreme sprinter on the planet— because it’s literally6 running blind.

Blood Thirsty Biter: The Shark

The most extreme biting animal in the countdown lives in the sea, but it’s not what you expect. But when it comes to biting, what could be better than Jaws7. Surely nothing could compete with the great white shark? The great white shark is a blood thirsty biter that could easily be number one in the countdown.

The average human bite strength is only about 21 kilograms per square centimeter. Compare that to a shark — their jaws are estimated to 6)generate forces 100 times more powerful. We’d go through a few teeth as well if our bite strength topped the scales at 2,800 kilograms per square centimeter.

It’s number one because for its size, the Cookie-cutter has the largest teeth of any shark in the sea. Scientists know that the Cookie-cutter, one of the smallest sharks in the world, hunts the biggest animals on the planet. Whales, not 7)nuclear submarines, are the normal diet of the Cookie-cutter shark and that’s what makes this biter number one in the countdown.

King of 8)Fertility:The 9)Tapeworm

This 10)parasite8 produces more 11)offspring than any other creature on earth. If you could give birth like a tapeworm, your children would fill the city of New York in two weeks. You’d be giving birth to a million babies a day!

Tapeworms are extreme breeders, because they have more sexual organs than any other animal. Their body is a long chain of more than 2,000 identical 12)segments and each segment is almost entirely9 devoted10 to producing eggs. That’s because the tapeworm’s life cycle means that an egg has to be swallowed by another animal and if we eat meat that’s infected by a tapeworm we get it too.

It’s a scary thought that 13)lurking in your lower 14)intestine12 could be one of 350 different species of human tapeworm! Although you may not like being the host of a parasite, you can’t help but admire the tapeworm’s incredible fertility. 

注释:
1) speedster [5spi:dstE] n. 高速行进的人,高速汽车,超速驾驶者
2) ferocious [fE5rEuFEs] a. 凶恶的,残忍的,凶猛的
3) sprint [sprint] v. 疾跑
4) brisk walk 快速步行
5) drag racer 短程高速的赛车
6) generate [5dVenE7reit] v. 产生,发生
7) nuclear submarines 核潜艇
8) fertility [fE:5tiliti] n. 丰产,多产,生产力
9) tapeworm [5teipwE:m] n. [动]绦虫
10) parasite [5pArEsait] n. 寄生虫
11) offspring [5CfspriN] n. (单复数同形)儿女,子孙,后代,产物
12) segment [5se^mEnt] n. 段,节,片断
13) lurk11 [lE:k] v. 潜伏
14) intestine [in5testin] n. [解,动]肠

最不可思议的动物

地球是一个充满极端的星球: 极端的地方和极端的动物。但是有些动物比其它任何东西都要极端。加入我们的行列,在“动物之最”节目里数一数最非同一般的、最与众不同的动物。

极速狂奔:甲虎虫

几乎在地球上的任何一个角落,你都能找到这最神速的动物,它可能是跑得最快的六腿动物。甲虎虫像个微型火箭,是世界上速度最快的昆虫,也可能是最凶悍的动物之一。
那么甲虎虫的速度究竟有多快呢?如果你把甲虎虫放在跑道上,它疾跑的速度跟人类快步走的速度是一样的。可能一小时八公里并不算神速,不过你想像一下,如果它和人一样大,那么它赢得一百米赛跑可只需要半秒钟!要捉住一只正以每小时四百八十公里的速度前进的甲虎虫,我们需要短程高速的赛车才行。
但是作为世界上最神速的动物也会有麻烦,甲虎虫跑得太快,几乎是什么也看不见了。当甲虎虫一动不动的时候,它的那双大眼睛看事物是正常的,但是一旦它飞跑起来,眼睛传达信息的速度就跟不上了,以至于无法看清周围的环境。甲虎虫是世界上跑得最快的动物——因为它简直是在“盲目”地狂奔。

血腥杀手:鲨鱼

排行榜上咬得最凶猛的动物就生活在海洋里。虽然并非如你所想的那样,但是说到撕咬,还有什么比得上电影《大白鲨》中的场景更让人惊心动魄的呢?无庸置疑,在撕咬这方面,没有其它动物能与大白鲨抗衡了。大白鲨嗜血如命,自然轻易地在排行榜上名列榜首。
人类的咬力一般只有大约每平方厘米21千克,相比之下,据估计,鲨鱼的上下颚能产生比人类大一百倍的力量。如果我们撕咬的力量也高达每平方厘米2800千克,我们会崩掉几颗牙齿。
因为拥有在海洋鲨鱼中最大的牙齿,达摩鲨堪称第一。科学家研究得知,达摩鲨虽然是世界上最小的鲨鱼之一,却能捕食地球上最大的动物——鲸鱼。鲸鱼才是达摩鲨通常所吃的食物,而非核潜艇,这也是为什么达摩鲨能在排行榜上名列榜首的原因。

多产之王:绦虫

这种寄生虫是地球上繁衍后代最多的生物。如果你能够像绦虫那样生育,你的子女将在两个星期内充斥整个纽约城——一天得生一百万个小宝宝呀!
绦虫的繁殖能力如此惊人,那是因为它们的生殖器官比其它动物都多。它们的身体就像长长的链条,由两千多个相同的节组成,几乎每一节都用来产卵。那是因为绦虫的生命循环意味着绦虫卵总会被其他动物吞噬。如果我们吃感染了绦虫的肉,我们体内也就带了绦虫。

想想这都觉得恐怖,或许在你的小肠里就潜伏着三百五十多种人体绦虫其中的一种。尽管你不愿意成为寄生虫的主人,但你还是不得不佩服绦虫惊人的繁殖能力。


点击收听单词发音收听单词发音  

1 beetle QudzV     
n.甲虫,近视眼的人
参考例句:
  • A firefly is a type of beetle.萤火虫是一种甲虫。
  • He saw a shiny green beetle on a leaf.我看见树叶上有一只闪闪发光的绿色甲虫。
2 ferocious ZkNxc     
adj.凶猛的,残暴的,极度的,十分强烈的
参考例句:
  • The ferocious winds seemed about to tear the ship to pieces.狂风仿佛要把船撕成碎片似的。
  • The ferocious panther is chasing a rabbit.那只凶猛的豹子正追赶一只兔子。
3 sprint QvWwR     
n.短距离赛跑;vi. 奋力而跑,冲刺;vt.全速跑过
参考例句:
  • He put on a sprint to catch the bus.他全速奔跑以赶上公共汽车。
  • The runner seemed to be rallied for a final sprint.这名赛跑者似乎在振作精神作最后的冲刺。
4 sprinter Fhczl7     
n.短跑运动员,短距离全速奔跑者
参考例句:
  • He is more a sprinter than a swimmer. 他是短跑健将,而不是游泳选手。 来自辞典例句
  • The sprinter himself thinks he can run the race at 9.4 seconds. 这位短跑运动员自认为可以用9.4秒跑完比赛。 来自互联网
5 beetles e572d93f9d42d4fe5aa8171c39c86a16     
n.甲虫( beetle的名词复数 )
参考例句:
  • Beetles bury pellets of dung and lay their eggs within them. 甲壳虫把粪粒埋起来,然后在里面产卵。 来自《简明英汉词典》
  • This kind of beetles have hard shell. 这类甲虫有坚硬的外壳。 来自《现代汉英综合大词典》
6 literally 28Wzv     
adv.照字面意义,逐字地;确实
参考例句:
  • He translated the passage literally.他逐字逐句地翻译这段文字。
  • Sometimes she would not sit down till she was literally faint.有时候,她不走到真正要昏厥了,决不肯坐下来。
7 jaws cq9zZq     
n.口部;嘴
参考例句:
  • The antelope could not escape the crocodile's gaping jaws. 那只羚羊无法从鱷鱼张开的大口中逃脱。
  • The scored jaws of a vise help it bite the work. 台钳上有刻痕的虎钳牙帮助它紧咬住工件。
8 parasite U4lzN     
n.寄生虫;寄生菌;食客
参考例句:
  • The lazy man was a parasite on his family.那懒汉是家里的寄生虫。
  • I don't want to be a parasite.I must earn my own way in life.我不想做寄生虫,我要自己养活自己。
9 entirely entirely     
ad.全部地,完整地;完全地,彻底地
参考例句:
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
10 devoted xu9zka     
adj.忠诚的,忠实的,热心的,献身于...的
参考例句:
  • He devoted his life to the educational cause of the motherland.他为祖国的教育事业贡献了一生。
  • We devoted a lengthy and full discussion to this topic.我们对这个题目进行了长时间的充分讨论。
11 lurk J8qz2     
n.潜伏,潜行;v.潜藏,潜伏,埋伏
参考例句:
  • Dangers lurk in the path of wilderness.在这条荒野的小路上隐伏着危险。
  • He thought he saw someone lurking above the chamber during the address.他觉得自己看见有人在演讲时潜藏在会议厅顶上。
12 intestine rbpzY     
adj.内部的;国内的;n.肠
参考例句:
  • This vitamin is absorbed through the walls of the small intestine.这种维生素通过小肠壁被吸收。
  • The service productivity is the function,including external efficiency,intestine efficiency and capacity efficiency.服务业的生产率是一个包含有外部效率、内部效率和能力效率的函数。
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TAG标签:   疯狂英语  extreme  animal
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