我国铁路干线的分布特点是什么？是什么原因造成的？（从地形和人口角度进行回

我国铁路干线的分布特点是东部密集，西部稀疏；
我国西部地区工业中心少，分布稀疏，与其原因有关的因素有地形、气候、人口、交通、资源、市场等；
我国四大工业基地的分布的共同特点是分布在东部沿海地区．这种分布的好处是海陆（空）交通发达，便于原料、原料的输入以及产品的输出；
长江航运在萎缩，加之水运速度慢，受季节、气候的制约，东西客货运输不畅的问题日益凸显．因此，铁道部和地方政府一起修建了沿江铁路．沿江铁路又叫沪渝铁路，从上海出发，止于重庆，全长2082公里，成为贯穿我国东西部的又一条新铁路线．沿江铁路建成后，将大大缓解东西交通运力不足的问题，还将使中部城市武汉挑战郑州的铁路枢纽地位．

介绍家乡（汕头）的英语作文

  我的家乡 我的家乡是一座海滨城市--汕头。 汕头，地处祖国东南沿海，有着独特的自然和人文环境。 它是一个桥乡，游子的丝丝情愫，是鱼儿对海的依恋。 汕头更是个文化之都，文学渊源流长，内容丰富。它哺育了一代又一代的潮汕人民，其文化永垂不朽。 汕头也是个美食之都，它有多种多样的美味小吃，潮汕工夫茶更是闻名天下。 再加之，汕头优美的环境，吸引着无数游人来这旅游。 而且，进入“十一五”规划后，汕头更是朝着现代化海滨城市的目标不屑努力。 汕头，我可爱的家乡，它是个美丽的神化。我爱它! My hometown is a seashore city - - Shantou. Shantou, lands place motherland southeast coastal, have unique natural and humanity environment. It is a bridge town, swim the silk feelings of son Su, is fish for sea love. Shantou is also a culture city , literature origin flows out length , has rich content. It have fed a tide of acting another generation people, its culture is immortal. Shantou is also beautiful meal Zhi , it has the varied snack of delicious food, tide Shan congou is more famous world. Again besides, Shan the environment with graceful head, since attracting countless visitor this travel. after entering the program of " 115 " Shan head is more dynasty the goal of modern seashore city disdain with great efforts.

关于探索太空的英语作文

Man has been fascinated by outer space for thousands of years. It has been
almost over forty years since mans first landing on the moon. Now, some people
believe that space exploration is a sheer waste of time and money. They point
out the fact that it cost billions of dollars to carry on the space research,
but a little information was brought back.
　　 However, every coin has two
sides. There are still a majority of other people who believe that space
exploration has more advantages. And I agree with those people. Many new
products, such as weather and communication satellites, are also products of
space programs, and they have benefited people all over the world. And whats
more, scientific knowledge about outer space has been acquired by mankind.
We believed that it wi!/bring more benefits in the future, which we can not
even imagine now. Space exploration is a challenge to human beings. Thats why
several nations try hard to carry out space exploration continuously.（英语作文）
　　翻译：
　　 我们是否需要太空探索
人类对外部空间着迷已有上千年的历史了。从人类第一次登上月球起至今已有四十多年了。现在，有些人认为空间探索完全是浪费时间和金钱。他们指出，数百亿美元用于太空研究，但收获甚微。

然而，任何事物都具有两面性。仍有大多数人认为进行空间探索利大于弊，我也非常赞同他们的观点。许多新产品，如气象、通讯卫星都直接得益于空间研究，使全球受益匪浅，而且人类从中获得了不少关于太空的知识。
我们相信，将来它会带给人类更多的好处，有些甚至是我们现在无法想象的。太空探索对我们人类来说是个挑战，这也是为什么许多国家不断进行探索的原因之一。

我眼中最伟大的发明英文作文带翻译 大概三五分钟 急急急急急 求帮忙

Of the worlds great inventions
Everyones awareness of the greatest invention in the world are different,and I think that,computer is the greatest.
In todays information age,computers have brought us considerable convenience.
It so that we can buy things at home,so that we can meet with friends to chat,so we know a lot of things they dont.
Various signs indicate that the worlds greatest invention is computer
世界上最伟大的发明
每个人对世界上最伟大的发明的认识不同,而我认为,电脑是最伟大的.
在当今的信息时代,电脑为我们带来了不少便利.
它使我们在家里就能买东西,使我们能与朋友聊天见面,使我们知道了很多不知道的事情.
种种迹象表明世界上最伟大的发明是电脑
发明改变了世界,改变了人们的生活,我所认为的最伟大的发明：
I think the most important modern invention is the Internet.With the Internet,we can do many things.For example,we can shop,learn knowledge,listen to music,and watch movies online.The Internet makes the world smaller.We can meet and talk to friends and relatives far away without spending a lot of money.