英语作文关于人类起源的演讲稿【一】
时光飞逝，渐渐地，随着人类掌握了科学知识，世界更是一下子成了人类主宰的天地。但人类的.追寻依然未停，也不会停止。直至1860年达尔文提出的大胆理论才打破了人们从前的无知。进入了一个崭新的阶段。
随着越来越多的人类化石的出土，人类对自己的认识逐渐明朗，头上的雾水也渐渐散去，但又画上了一个更大的问号。“古猿说”是人类最早确定的一种观点，即认为人类是从猿经过古猿，南方古猿，能人，直立人直到智人一步步进化而成的。一些化石为这一理论增添了可靠性。然而，随着人们对人体更加深入地研究发现，更多的谜团笼罩在人们的头上，随之而来的“海猿说”，“外星人说”使人们对自己的研究更为多元化。人们通过自己的钻研不断提出新的猜想。至今，仍是众说纷纭，无法定论。但人们依然把“古猿说”当作人类起源的根基理论，并以此不断探索。
虽然现在没有定论，但人们随着时代的不断发展，对自己的认识也会逐渐趋于合理。人类到底是天上神仙的完美杰作，还是大自然鬼斧神工的产物?人类起源的奥秘最终定会破解。打开这把枷锁的钥匙就在不远处等待着人类的到来。
英语作文关于人类起源的演讲稿【二】
A man walking in the night slipped from a rock. Afraid that he would fall down thousands of feet, because he knew that place was a very deep valley, he took hold of a branch that was hanging over the rock. In the night all he couls see was a bottomless abyss. He shouted, his own shout reflected back--there was nobody to hear.
You can imagine that man and his whole night of scare. Every moment there was death, his hands were becoming cold, he was losing his gripand as the sun came out he looked down and he laughed. There was no abyss. Just six inches down there was a rock. He could have rested the whole night, slept well---the rock was big enough---but the whole night was a nightmare.
Fear is only six inches deep. Now it is up to you whether you want to go on cling to the branch and turn your life into a nightmare, or whether you would love to leave the branch and stand on your feet.
There is nothing to fear.
英语作文关于人类起源的演讲稿【三】
亲爱的人类：
你们好!自从我诞生于银河系,成为九大行星,唯一有山有水,鸟语花香的地方之后，一代代，一代代的生命在我的身上慢慢地繁衍下去……恐龙灭绝后,你们诞生在我身上,我真替你们开心，因为你们可以在我身上自由自在地生活，所以我就让鸟儿唱得更欢;花儿开得更艳;树木长得更旺……唉!可是你们似乎不领情。有一些人们为了少走几步路，竟然从小草身上走过去，踩得它“痛哭流涕”;还有的小孩丫丫把垃圾重重地扔在垃圾桶上,砸得它“眼冒金星”;有的工厂为了省钱，直接将污水排到河水里，小虾小鱼“死的死，伤的伤，”全部“移居”到别的地方;越来越多的汽车排放了尾气，空气不再清新;天空不再湛蓝;河水不再清澈;连绵起伏的群山死气沉沉的，不再有以往那样生机勃勃的景象了。
我的血液——河流，如今已是臭气熏天;我的衣服——树木，如今已被大量砍伐;我的皮肤——大地，也已经全是脏兮兮的垃圾。你们保护环境的口号叫得响当当，“君子一言，驷马难追”，可你们为什么说到却不做到呢?当然，也有一部分人已经觉醒，开始中主动种树木，捡起地上的垃圾和脏物……我真要好好谢谢你们，但这些还远远不够。我们只有一个地球，破坏环境等于自毁家园。
亲爱的人类，让我们大家一起行动起来，齐心协力，共同保护好我们唯一的家园——地球(我，给自已创造一个安静、美满、无忧无虑、环境清新的绿色家园吧!祝你们生活美满、幸福、愉快!
此致
敬礼!
英语作文关于人类起源的演讲稿【四】
Children's finally here, it is our holiday, but imagine the children also accompanied by together, everybody is more excited.
Children on this day, white clouds float over the blue sky, the children also have made a hot air balloon, they sit together on yourself a hot-air balloon, extremely happy! Balloon flying high, and finally flew to the sky, the children are in the sky holiday, the children sit on clouds, umpa jump, like a frisky little monkey.
Playing children, suddenly to rain cats and dogs, the children of the balloon has stalled, baiyun sister swept away by the wind, the children fell into despair. Is a time of crisis, a group of dragonflies sister and sister flew caught the children, and the safety of the children to the ground.
On the ground, only butterflies woven into a rainbow "lei", the children wear a wreath, some like a fairy, some like a warrior.
Play tired, the children fell asleep between full of fragrance of flowers.
Children's good play my imagination, to one day be able to live in such a children's day.
