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关于快灭绝的动物的英语作文500字

关于快灭绝的动物的英语作文500字

无论在学习、工作或是生活中,作文的形式很常见,但是作文的注意事项有许多,你确定会写吗?以下是关于快灭绝的动物的英语作文500字,欢迎大家分享。

关于快灭绝的动物的英语作文500字篇1

现在已经是22世纪了,全世界都进入了高科技时代。到处是一座座翠绿色的高楼大夏,绿水青山,空气清新,随处可见共享磁悬浮汽车。街道上,机器人与人一同行走。

这时候,科学研究已经到了巅峰。在月球和火星,不少人已经可以去那儿旅行甚至定居了;在地球,机器人为人们的衣食住行提供方便,将人们的生活起居照顾得无微不至。但是,科学家们一直为一个百年来无法解决的问题而苦恼——恐龙为什么会灭绝?身为中国首席科学家的我,也在日以继夜地研究找到这个问题的谜底。

一天,我乘着超光速防脑震荡的飞船到地球上度假。说起来,我有三十几年没回故乡地球了,在月球上的大型空间站里工作了三十几年,月球算是我的第二故乡了。这次是因为我的团队刚刚研究发明出“智能人类太阳”——等离子火花塔,获得了诺贝尔奖,我才给自己放了几天假。

坐在飞船上,我一边隔着玻璃欣赏着蔚蓝美丽的地球,一边思索着恐龙灭绝到底是因为小行星撞击还是火山爆发等老套说法,还是有别的原因。到达地球,下了飞船,一个机器人马上飞到我身边说:“李先生,有件紧急的科学事件需要您解决!”听到这个消息,我二话没说,马上坐上磁悬浮汽车前去目的地。

到了那里,有一群人围着一块地方观看并议论。大家看见我来了,立即给我让路。我上前一看,这是一个汽车大小的机器,呈球形,是刚从地里挖出来的,我立刻让机器人带着它回到月球的基地。在基地检测后,我发现这是几亿年前的东西,而且不是22世纪的科技,明显比22世纪的科技更上一层楼!

我试着摸了摸这个机器,它即刻打开了门,这机器竟然还能用!我走进门一看,眼前出现一个虚拟屏幕,上面显示请我输入地点和时间,我立刻明白这台机器就是虫洞机,可以进行时空跳跃。我的手激动得发抖,下意识地在上面输入了侏罗纪时期的北美大陆。没过多久,我眼前出现一个神秘的洞穴,没等我惊讶得回过神来,一股强大的吸力就把我吸了进去。

我的头脑瞬间一片空白,几秒后,我掉落到了一片树林中。睁眼一看,那台虫洞机还在我身后,这里到处长满了巨大的植物。忽然,我身旁跑过一只和我一样大的迅猛龙,天哪,这里真的是侏罗纪!这时,我听到了一阵阵巨大的脚步声,赶忙跑过去看,我站立的下方出现一只又一只三角龙、霸王龙、剑龙、腕龙等恐龙,它们如行尸走肉一般跑进一个黑黑的洞穴里去,这是怎么回事?

我再仔细往下看,看见我脚下的那个洞穴旁边站着两个人,他们身边也放着一个和我一模一样的时光机。

“我们23世纪的雷达真厉害,过不了多久整个北美的恐龙都会落在我们手上!”

“是啊,我们又能赚一大笔钱了!”

原来如此!现在,我终于知道恐龙为什么灭绝了,原来是这两个23世纪搞走私赚钱的家伙捣的鬼!

得想办法阻止他们!可是,我现在手无寸铁,不能跟他们硬碰硬,只能智取。

思忖片刻,我就往下方扔出一块石头,正好砸中其中一个人的脑袋,那家伙受了伤。两个人一下子慌了神,疑心周围有人,就离开洞穴到处搜查。

我见此机会,马上冲到洞穴前面,一开按钮破坏了那个雷达系统。只见一群群的恐龙都从洞穴里跑了出来,吓得那两个走私犯撒腿就跑,慌慌张张乘坐他们的时光机溜走了。我把这些恐龙放回侏罗纪时代,然后坐着那台时光机返回来。

回到22世纪,我看见侏罗纪的恐龙们居然出现在动物园里。

我相信,人类一定会破解更多谜题的!

关于快灭绝的动物的英语作文500字篇2

不同科学领域之间是紧密相连的,在一个科学领域的发现肯定会对其他领域产生影响。

例如,一些科学家发现,在恐龙灭绝之前的白晋纪末期,恐龙蛋壳会有变薄的趋势,说明当时有气候急剧变化的现象。中国的一些古生物学家也发现,在一些化石地点产出的恐龙蛋中,临近灭绝时期的那些恐龙蛋壳上的气孔比其他时期的恐龙蛋蛋壳上的气孔要少,这很可能与气候变得寒冷有关。

假设真是如此。因为鳄鱼是曾与恐龙生活在同一时期的,所以,我们可以先从鳄鱼入手。现在,我们都知道鳄鱼的雌雄取决于处于卵期的气温。当气温高时,鳄鱼卵为雄性;而当温度低时,鳄鱼卵为雌性。由此猜测,恐龙也是如此。

因为气温下降,所以产出来的都为雌性恐龙。

并且,现代科学的分析使我们了解到:在地球刚刚形成的年代里,空气中基本没有多少氧气,但是二氧化碳的含量却很高。后来,随着自养生物(靠无机营养生活和繁殖的生物)的出现,光合作用开始了消耗二氧化碳和制造氧气的过程,从而改变了地球上的大气环境。那么这与恐龙的灭绝有影响么?

众所周知,每种生物都要在适应的环境下才能生存,才能正常地生活。环境的变化能导致一个物种的变化。当环境有利于这一物种时,它就会兴旺发展;反之,则会衰落甚至灭绝。

那么,因为当时恐龙生活的中时代,大气中的二氧化碳含量极高。说明恐龙已经适应于那样的大气环境了。也许,只有在那样的环境下,恐龙才能更好地生活。

当二氧化碳含量降低时,恐龙就无法生存下去。

所以,恐龙灭绝的原因可能与大气的气温变化有关。同时,这也是白晋纪末期大气骤变的一个强有力的证据。

关于快灭绝的动物的英语作文500字篇3

在没有足够的证据和现象面前,科学推论与猜想是没有唯一说法的,所以一些别出心裁的科学家才会大胆的进行猜测。

列如,一亿多年前,地球上曾生存着一群群庞然巨兽——恐龙,统治了地球千万年之久,可在六千五百年左右的白垩纪晚期,他们却消失在了这个世界。

是什么让恐龙遭受了灭顶之灾?科学家研究表明,6500万年前的沉积岩化石中,烃类有机物气体含量异常丰富。有些人认为,因为恐龙已在地球上生存了近一亿年之久,随着生存时间的增长,生物对环境的要求也大大增加,对环境的污染也会增强。

由此可知,因为恐龙的长时间生存,且进食量巨大,体型庞大,破坏力强,消化速度迅速,再加上种类繁多,多次的增长进化,使恐龙对环境造成了严重污染,植物大量减少,从而使植物光合作用所产生的氧气微乎其微。重上加重的是,由于恐龙消化系统特殊,进食后肠道大量释放消化气体,使空气中甲烷,一氧化碳等易燃有毒气体含量大量上升。再加上种数个体过大,植物负增长等因素,对大气臭氧层造成了严重的破坏。紫外线大量直射向地球表面,使恐龙发生癌变,皮肤受损,细菌入侵,从而别差点“灰飞烟灭”的灭绝。

然而,并不是所有的科学家都认可这个观点。

1985年10月中旬,德国科学家梅佑喆戈仁·沃唧几暇硕德在北极沿岸的冰层下发现了像是被激光切割过的恐龙化石与恐龙骨片,于是,科学家大胆推测,是外星高等生物喜欢食用地球恐龙,其肉嫩可口,不腻不膻,经烹饪后微辣鲜香,油亮焦黄。“恐龙之香佛难耐,何况凡夫外星人。生来口福莫如此,饱食一顿似赛神。”,就这样食用了几百年,恐龙便被屠杀的一干二净,地球就只剩下了其他的生物。

那么,造成恐龙灭绝的原因就有两种说法了,而不是单单只有唯一的一种,只要发现了足够的证据,真理自然就会浮出水面。

关于快灭绝的动物的英语作文500字篇4

在那个风吹雨成花,能源被岁月蒸发的时期,生活着一群我们熟悉而又陌生的生物--恐龙。

我走进时间的流里,倾听它们的故事。恐龙是来自未知星球的生物,它特来唤醒地球。从第一只恐龙乘着风降落后,它的叫声,使地球的小溪轻吟出清脆的歌声;它每走一步,脚下都有草儿注视它,花儿向它频频点头;它躺在草儿上,会有苍翠茂盛的大树为他遮挡盛夏的太阳。它满心欢喜的完成任务回到星球,但它却忘记关闭通往地球的那扇门。恐龙们纷纷借助这一千载难逢的机会,来到外面的世界------地球。它们在地球上生活了数亿年,肆意妄为。它们的首领虽有一幅凶猛的外表,但却有一颗雷锋般的心,它派使者传播消息、召唤恐龙回家。此时,小行星撞击地球,引起火山喷发,浓岩沸腾,郁郁葱葱的森林变成一片火海,炙热的气流导致气候干燥,寸草不生,恐龙失去赖以生存的家园,从此销声匿迹。

随着社会、经济的发展和科学水平的提高,已经严重出现能源短缺以及因能源的利用而造成的环境污染等问题。减少汽车尾气、工业废气已成为一件刻不容缓的任务。如果人类继续肆意妄为,各种污染物将会进入地球大气;如果各种污染物进入地球大气,可能大气层会被破坏得支离破碎;如果没有洁净的大气层,地球将变成一个黑暗寒冷。无声的世界,一切生物都将离开这个诗情画意的世界!人类将像恐龙一样横遭不幸,因为环境恶化、资源匮乏走向灭绝。没有可口的食物;没有甘甜澄澈的水;没有那璀璨的阳光……人类将不是地球的主宰,只能和恐龙一样消失在历史的长河中!保护环境刻不容缓!花儿期待清风把自己吹得更娇艳;草儿期待翠绿把自己的装点的夺目;小溪期待鱼儿可以与它玩捉迷藏;地球期待人类与自己携手保护这个美丽的生态系统。

云翻涌成夏,又将是一年夏天!恐龙的故事又在我耳边萦绕……

关于快灭绝的动物的英语作文500字篇5

关于动物的英语作文

The animal is human friend, we should cherish it, let what they have a peace live environment. If the animal has a red-letter day, I am about to help them comb hair, let them eat on the most delicious dish, etc, perhaps be in before long in the future, small tiger is us to look after the house, lovely small sea lion accompanies us to swim, small monkey becomes a conduct a sightseeing tour, the place that takes us to see them live before - beautiful fruit hill. Let us riding a camel to worldly the biggest desert goes playing. The animal has a lot of red-letter days on section world, wait like division of the Children's Festival, mother's day, dragon boat festival, forest, why can you do not have animal section? Puppy people very lovely also! They and mankind are same, live on this earth jointly, bring how many joy to the mankind! You look, the doggie can help host look after the house, the kitten can eat off rascal mice completely, ox can farmland, the hen can lay etc, and some people contest is caught in our mankind kill those puppy, do the distress that is our mankind so? I want to appeal aloud here: The animal is human friend, we should cherish it, let what they have a peace live environment. If the animal has a red-letter day, I am about to help them comb hair, let them eat on the most delicious dish, etc, perhaps be in before long in the future, small tiger is us to look after the house, lovely small sea lion accompanies us to swim, small monkey becomes a conduct a sightseeing tour, the place that takes us to see them live before - beautiful fruit hill. Let us riding a camel to worldly the biggest desert goes playing. If arrived animal section, I should do an animal clique to be opposite, that day, animal people want to eat what to eat, let them eat fully full, call them to live of 5 stars class " animal guesthouse " . Anyhow, arrived animal section that day, everybody should take a kind of animal to come home, take them to ramble bazaar, buy a toy to wait. For the life better, everybody hastens the action rises, let an animal people spend a happy red-letter day at an early date!

关于快灭绝的动物的英语作文500字篇6

◆您现在正在阅读的我的英语老师my english teacher文章内容由收集, 本站地址:,版权归原作者所有.!

我的英语老师my english teacher

in my life, ms. wang is the most important person to me. her teaching skills are diverse. in class, she usually uses games and posters. she works hard for us. when other teachers rest, she still keeps working and working. when we are mischievous, she is good at giving systematic guidance.

we are really grateful for what she has done for us. we want to say ”thank you” to her.

关于快灭绝的动物的英语作文500字篇7

◆您现在正在阅读的这就是我的英语老师(this is my english teacher)文章内容由收集, 本站地址:,版权归原作者所有.!

这就是我的英语老师(this is my english teacher)

这就是我的英语老师(this is my english teacher)

she is 23 years old . she has got long hair . she has got small body ; her feet are small ; her eyes are big ; her hands are big ; her ears are small . she is beautiful . i love my english teacher !

关于快灭绝的动物的英语作文500字篇8

◆您现在正在阅读的我的英语课堂(my english classroom)文章内容由收集, 本站地址:,版权归原作者所有.!

我的英语课堂(my english classroom)

我的英语课堂(my english classroom)

this is my english classroom . it is not big and not small . we usually study in the classroom .

there is a blackboard in front of the classroom .it is not big ,but it is helpful .my english teacher usually writes some english letter .the air-conditioner is on the right in the wall .it is white .in summer ,it is cool to us .there is a clock on the behind wall .it is blue and cute .it tells us the time .there are three long desks in middle of the classroom and there are three small desks on the right in the classroom .

look !this is my classroom .i like it.

关于快灭绝的动物的英语作文500字篇9

关于端午节的英语作文

Dragon Boat Festival is an ancient traditional festivals, began in the Spring and Autumn period, has been 2000 years of history. Dragon Boat Festival originated from Qu Yuan's story: Qu Yuan advocated by the virtuous and Empowerment, Fuguoqiangbing, advocated joint Qi Kang Qin, it was noble son of Lan and others strongly opposed, the result being greedy Qu Yuan has resigned, and was driven out of capital, exiled to Yuan, Xiang River. 278 BC, the Qin break Chu Kyoto. Qu Yuan saw their country invaded, Xinrudaoge, but still could not bear to give up their own country, in the May 5, the pen never wrote a "Huaisha", the bouldering vote Miluo River body death, taking our own lives composed a magnificent song of patriotism movement. Legend of Qu Yuan's death, the state of Chu people abnormal grief, have rushed to pay tribute to Qu Yuan Miluo River. Fishermen are drawn from the vessel, in the river salvage his real body back and forth. One fisherman come prepared for Qu Yuan's rice balls, eggs and other food, "thump, thump" land thrown into the river, saying it was fed to fish, crab, lobster, they will not bite Qu doctor's health. People see below followed suit. An old doctor was brought an altar Announcements, updates, poured into the river, saying that the water should be drug halo dragon beast, so as not to hurt the doctor bent. Later, as the dragon balls for fear of food, people come up with neem leaves Ssambap, outer wrapped wire color has developed into zongzi. After the fifth day of May of each year, there is a dragon boat races, eating dumplings, drink Announcements, updates, customs, in order to commemorate the patriotic poet Qu Yuan.

Dragon Boat Festival is a tradition to eat dumplings. Whenever the fifth day of May, my mother would pack a number of dumplings, let us satisfy their appetites. Mama's dumplings packages are particularly tasty, one end of the table, the smell of the fragrance comes, I will be devoured his brother and Dad have to eat, will not rest until eat.

The Dragon Boat Festival kids wear Sachet, legends evil blast meaning flooding, is actually a window dressing for the first lapel. Sachet containing cinnabar, realgar, incense medicine, outsourcing to cloth, fragrance lovers, and then to buckle into a five-color silk string cable for a variety of different shapes, form a string, all kinds, cute.

Wearing a sachet, relish in eating the fragrant rice dumplings, the Dragon Boat Festival, I have more heart indescribably happy. Today, Dragon Boat Festival has been the national statutory holiday and that China's folk customs handed down from generation to generation!

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