Dinosaurs are very large creatures which appeared on the earth millions of years ago.They became extinct many years later because of a change in climate and they could no longer find any food to eat.Today,people know that dinosaurs had once existed because scientists discovered the remains of their bones when they dug underneath the ground.We can see the skeletons of these dinosaurs now in the museums.
关于恐龙的英语作文
地球的历史已经有45亿年了。
在距今约束38亿年前出现了最早的生物。
从那时起,地球上的很多生物经历了兴起、衰落直至灭亡的历程,只有化石留存至今。
现在世界各地都能找到各个时期不同种类的化石,这些化石告诉了我们地球沧海桑田的变迁历史。
距今两亿多年前,地球上曾经生活着一群生物——恐龙。
它们盛极一时,称霸地球达成1.5亿年之久。
在人类出现以前,恐龙就已经灭绝了,没有人见到过活的恐龙。
今天我们所知道的有关恐龙的一切是从恐龙的化石得来的。
由于人们找到了它们的骨、齿、卵的化石,和皮肤痕迹、脚印、穴居场所等,科学家们就根据这些线索去探索有关恐龙的秘密。
The Earth's history has been 45 billion years. Constraints in the 38 million years ago before the emergence of the earliest organisms. Since then, much of the planet has experienced the rise of biotechnology, the course of the decline until extinction, only the fossils so far retained. Now the world can be found in various periods of different types of fossils, these fossils tell the history of our planet earth-shaking changes. Dating back more than 200 million years ago, life on Earth has a group of organisms - the dinosaurs. They are very popular and dominate the Earth to reach 1.5 million years old. In humans before the advent of dinosaurs had become extinct, and no one to see live dinosaurs. Today, we know everything about dinosaurs from the dinosaur fossils come. As people found their bones, teeth, egg fossils, and skin marks, footprints, and other cave sites, the scientists on the basis of these clues to discover the secrets of the dinosaurs.
来到恐龙世界的英语作文
关于恐龙的英语作文(60字)Dinosaurs are very large creatures which appeared on the earth millions of years ago.They became extinct many years later because of a change in climate and they could no longer find any food to eat.Today,people know that dinosaurs had once existed because scientists discovered the remains of their bones when they dug underneath the ground.We can see the skeletons of these dinosaurs now in the museums.
英语作文:恐龙灭绝的原因
The extinction of dinosaurs The mystery of dinosaur extinction More than 200,000,000 years ago in the Mesozoic, a large number of reptiles living on land, it is also known as the Mesozoic "era of reptiles," the earth was the first to occupy a wide range of vertebrates. At that time the Earth's climate was warmer, all over the dense forests, reptiles have enough food, gradually prospered, more and more species. They continued to differentiate into a variety of different types of reptiles, some of today has become a turtle, and some turned into the type of crocodile, and some turned into today's snakes and lizards, which are a class of Around the world and evolved into today's mammals. All is the dinosaur reptiles in the largest class of physical, very suitable for living in the marshes and shallow lake, when warm, humid air, food is also very easy to find. Therefore, dinosaurs ruled the earth for several million years of time, but I do not know why, in their 6500 years ago a very short period of time of the extinction of a sudden, people see only the left by that time a large number of dinosaur fossils. With regard to the reasons for the extinction of dinosaurs, it is still being studied. For a long time, the most authoritative view, and the extinction of the dinosaurs 6500 years ago about a large meteorite. According to the study, there was a 7-10 km in diameter asteroid will fall on the earth's surface, causing a large explosion, such as throwing a lot of dust in the atmosphere to form the Zhetianbiri House of Sand and Fog, led to the suspension of plant photosynthesis , And therefore the extinction of the dinosaurs.
关于恐龙的英语短文、五年级、8句话就OK、要翻译、必须是五年级水...
To Pull up the Seedlings to Help Them Grow Once upon a time, an old farmer planted a plot of rice. Everyday he went to the field to watch the seedlings grow. He saw the young shoots break through the soil and grow taller each day. But still, he thought they were growing too slowly. He got impatient with the young plants. "How could the plants grow faster?" He tossed in bed during the night and could not sleep. Suddenly he hit upon an idea. He had an idea not wait for daybreak. He jumped out of the bed and dashed to the field. By the moonlight, he began working on the rice seedlings. One by one, he pulled up the young plants by half an inch. When he finished pulling, it was already morning. Straightening his back, he said to himself, "What a wonderful idea! Look, how much taller the plants have grown one night!" With great satisfaction, he went back home. He told his son what he had done in a triumphant tone. His son was shocked. Now the sun had risen. The young man was heart-broken to see all the pulled-up young plants dying. People now use " Ba Miao Zhu Zhang" to describe the behavior of those who are too eager to get something done only to make it worse. The idiom is a bit like the English proverb "Haste makes waste" ------to spoil things by excessive enthusiasm. 拨苗助长 从前,有个农夫,种了稻苗后,便希望能早早收成。
每天他到稻田时,发觉那些稻 苗长得非常慢。
他等得不耐烦,心想:“怎么样才能使稻苗长得高,长很快呢? 想了又想,他终了想到一个“最佳方法”,就是将稻苗拨高几分。
经过一番辛劳后,他满意地扛锄头回家休息。
心想:明天稻苗长得一定更高了。
隔天早晨.一早起身,他迫不及待地起去稻田看他的“成果”。
哪知,他跑到稻田时,却看到所有的稻苗都枯萎了。
英语作文《我心目中的恐龙》60词,用中文写出来也可以
我,就是恐龙,藏在奶奶心里的那只最最最宝贝的恐龙,是奶奶一级保护的对象。
爸爸说我在奶奶身边呆了都不用了,饮食和行为习惯都很差,还胆小如鼠。
也许吧,奶奶是太溺爱我了,对我百依百顺,很宠我,要是谁数落我的不是,奶奶就会怒发冲冠,火冒三丈。
造成种种的不是,也不能说奶奶不好,是奶奶对我太好了,我现在长大了,是要好好反省下。
恐龙的作文【50】字
所有恐龙已经灭绝,但是恐龙的后代——鸟类还是存活下来了,并繁衍至今。
恐龙(英文:dinosaur)是生活在距今大约2亿3 恐龙500万年至6596万年前的并且能以后肢支撑身体直立行走的一类陆生动物,是群中生代的多样化优势脊椎动物,大多数属于陆生(栖息在陆地上)的爬行动物,但能直立行走,支配全球陆地生态系统超过一亿六千万年之久。
恐龙是生活在距今大约2亿3500万年至6500万年前的、能以后肢支撑身体直立行走的的一类动物,支配全球陆地生态系统超过1亿6千万年之久。
大部分恐龙已经灭绝,但是恐龙的后代——鸟类存活下来,并繁衍至今。
另外在口语中,恐龙指丑女。
“恐龙”一词在字典中有两个意思:一类生活在几亿年以前的古动物,现已灭绝;(网络用语)当代相貌不好的女性。
从早侏罗纪到晚白垩纪,恐龙家族适应环境因而发展迅速,使得恐龙向着多样性方向发展,恐龙的种群数目增加,使恐龙这一类具有优势,恐龙由此得以支配地球陆地生态系统。
恐龙种类多,体形和习性相差也大。
其中个子大的,可以有几十头大象加起来那么大;小的,却跟一只鸡差不多。
就食性来说,恐龙有温驯的素食者(吃植物的恐龙)和凶暴的肉食者(吃动物的恐龙),还有荤素都吃的杂食性恐龙.最古老的爬行类化石可追溯至古生代之“宾夕法尼亚纪”(约3亿2000万年前─2亿8000万年前)。
追本溯源,当系由两栖类演化而来。
两栖类的卵需在水中才能开始发育。
爬行类演化出卵壳,可阻止卵中水分的散发。
此一重大改革,使爬行类可以离开水生活。
从2亿4500万年前到6500万年前的中生代,爬行类成了地球生态的支配者,故中生代又被称为爬行类时代。
大型爬行类恐龙即出现于中生代早期。
植食性的迷惑龙,是体形与体重最大的陆栖动物。
棘龙是迄今为止陆地上最大的食肉动物。
另有生活在海中的鱼龙与蛇颈龙及生活于空中的翼龙等共同构成了一个复杂而完善的生态体系。
爬行类在地球上繁荣了约1亿8千万年左右。
这个时代的动物中,最为大家所熟知的就是恐龙。
人们一提到恐龙,眼前就会浮现出一只巨大而凶暴的动物,其实恐龙中亦有小巧且温驯的种类。
恐龙属脊椎动物爬行类,曾生存在中生代的陆地上的沼泽及灌木丛里,后肢比前肢长且有尾。
其中有许多种好食肉,许多种好食草。
其中发展较缓慢的种类,类似最古之鳄及喙头类,发展较完善的种类与鸟类相似。
北京时间10月30日消息,长久以来,古生物学家一直无法确定恐龙是否也像鸟类或者角马等动物一样进行迁徙。
由于可能面临异龙(霸王龙的远亲)带来的威胁,巨型食草恐龙在草原上迁徙并不是一个非常牵强的想法。
现在,美国科罗拉多州大学的研究人员第一次证明,恐龙也会在生存环境恶化时迁徙。
研究人员利用牙齿化石中的氧第一次证明,恐龙在泛滥平原之间迁徙。
在1862年发现的始祖鸟化石,与美颌龙化石极其相似,差别在于始祖鸟化石有明显的羽毛痕迹(美颌龙虽然也有羽毛,但它们很原始),事实上有相当一部分食肉恐龙具有原始羽毛,这显示恐龙与鸟类可能是近亲。
自从1970年以来,许多研究报告指出现代鸟类极可能是兽脚亚目恐龙的直系后代。
现在,大部分科学家视鸟类为唯一幸存发展至今的恐龙,而少数科学家甚至认为它们在生物学中应该分类于同一纲(即现未建成的恐龙纲)之内。
鳄鱼则是另一群恐龙的现代近亲,但两者关系较恐龙与鸟类远。
恐龙、鸟类、鳄鱼都属于爬行动物的初龙类演化支,该演化支首次出现于晚二叠纪,并在中三叠纪成为优势动物群。
从发现恐龙到20世纪前60年,由于对恐龙了解不足,科学家与大众媒体都视恐龙为行动慵懒、缓慢的冷血动物。
但是自从20世纪70年代开始的恐龙文艺复兴,提出恐龙也许是群活跃的温血动物,并可能有社会行为的观点。
近期发现的众多恐龙与鸟类之间关系的证据,支持了恐龙是温血动物的观点。
但事实究竟如何,还需进一步的考证。
实际上,人类发现恐龙化石的历史由来已久。
早在发现禽龙之前,欧洲人就已经知道地下埋藏有许多奇形怪状的巨大骨骼化石。
直到发现了禽龙并与鬣蜥进行了对比,科学界才初步确定这是一群类似于蜥蜴的早已灭绝的爬行动物。
1842年,英国古生学家查理德·欧文创建“dinosaur”这一名词。
英文的dinosaur来自希腊文deinos(恐怖的)Saurosc(蜥蜴或爬行动物)。
对于当时的欧文来说,这“恐怖的蜥蜴”或“恐怖的爬行动物”是指大的灭绝的爬行动物(实则不是)。
实际上,那个时候发现的恐龙并不多。
自从1989年南极洲发现恐龙后,全世界七大洲都已有了恐龙的遗迹。
目前世界上被描述的恐龙至少有650至700多种(生物学上的物种)。
后来,中国、日本等国的学者把它译为恐龙,原因是这些国家一向有关于龙的传说,认为龙是鳞虫之长,如蛇等就素有小龙的别称。
恐龙在地球上生存了近1亿7千万年的时光,在这么长的时间里,的环境也发生了许多变化。
原本连成一整片的盘古大陆逐渐漂移,分裂成为现在我们熟知的形态。
这些地球板块漂移到全球各处后,由于光照不再均匀,热量的传导也被海洋阻断,气候环境也跟着发生了改变。
在恐龙时代早期,蕨类植物构成...
小恐龙到动物园英文作文
今天,我和爸爸、爷爷、弟弟一起去看精彩的恐龙展。
恐龙展设在儿童公园里,一进儿童公园的大门就看到一张大海报,上面写着“重返侏罗纪”,再往里走会看到一只身材高大的机器蜀龙,再往前走就到了恐龙展的入口处。
进入恐龙展区就看见活灵活现的恐龙机器人,它们的身高和书上描写的恐龙一样大小,好像我们直接进入了侏罗纪公园,耳边不时传来恐龙的恐怖叫声。
那些恐龙的种类有恐龙世界的“高个子”梁龙、背上长着三角形骨板的剑龙、拥有恐怖爪子的恐爪龙……,走着走着我们来到了肉食性恐龙中最凶猛的暴龙展览处,那只暴龙和《侏罗纪公园》这部电影里面的暴龙一模一样,好像它马上就要把我们给吃了。
这些恐龙的皮是用橡胶做的,恐龙旁边放着一个发音盒,恐龙的叫声就是从这个发音盒发出来的。
那些恐龙叫声声音怪异,有时会突然叫得特响,你会被这叫声吓一大跳;有些恐龙的头会藏在树丛间,等你不经意发现时,会吓得你魂飞魄散。
庞大的恐龙家族为什们会消失了呢?据科学家推测:由于地震使大陆分离,各地气候大变,恐龙无法适应,最后灭绝了。
这次恐龙展让我了解了更多恐龙的知识,我希望能进一步发现恐龙的奥秘。
有英语介绍香港迪士尼乐园,5——6行可以了。
一篇介绍恐龙的英语...
霸王龙,陆地上的霸王,最凶猛的恐龙震龙,世界上最大的恐龙美颌龙,世界上最小的恐龙蜥臀目(Saurischia)、 鸟臀目(Ornithischia)。
主要的2大类蜥臀目分为蜥脚类(Sauropoda)和兽脚类(Theropoda)。
蜥脚类又分为原蜥脚类和蜥脚形类。
兽脚类,鸟脚类,剑龙类,甲龙类,肿头龙类l.6亿年之久的庞大动物类群在白垩纪末期却突然覆灭回答完毕,纯工工,第1个问题我不知道。
喜爱的恐龙用英文怎么写。
60单词。
求。
暴龙(又名霸王龙)是我最喜欢的恐龙,它是一种大型的肉食性恐龙,身长约13公尺,体重约7公吨,生存于白垩纪末期的马斯垂克阶最后300万年,距今约6850万年到6550万年.它也是白垩纪-第三纪灭绝事件前最后的恐龙种群之一.Tyrannosaurus is my favourite dinosaur.It is a large carnivorous dinosaur, its body length of 13 meters and weighing about 7 tons, lived in the end of the Cretaceous Maastrichtian and last for 3 millions years, since about 68.5 million years to 65.5 million years.The tyrannosaurus is one of the last dinosaur species before the events of Cretaceous - Tertiary extinction.