人教版英语必修3第四单元阅读

1. 高中英语必修三第四单元第一篇课文原文

HOW LIFE BEGAN ON THE EARTH
No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory, the universe began with a "Big Bang" that threw matter in all directions. After that, atoms began to form and combine to create stars and other bodies.
For several billion years after the "Big Bang", the earth was still just a cloud of st. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the st settled into a solid globe. The earth became so violent that it was not clear whether the shape would last or not. It exploded loudly with fire and rock. They were in time to proce carbon, nitrogen, water vapour and other gases, which were to make the earth's atmosphere. What is even more important is that as the earth cooled down, water began to appear on its surface.
Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. It was not immediately obvious that water was to be fundamental to the development of life. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This proced a chain reaction, which made it possible for life to develop.
Many millions of years later, the first extremely small plants began to appear on the surface of the water. They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish. Next, green plants began to grow on land. They were followed in time by land animals. Some were insects. Others, called amphibians, were able to live on land as well as in the water. Later when the plants grew into forests, reptiles appeared for the first time. They proced young entirely by laying eggs. After that, some huge animals, called dinosaurs, developed. They laid eggs too and existed on the earth for more than 140 million years. However,65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remains a mystery. This disappearance made possible the rise of mammals on the earth. These animals were different from all life forms in the past, because they gave birth to young baby animals and proced milk to feed them.
Finally about 2.6 million years ago some small clever animals, now with hands and feet, appeared and spread all over the earth. Thus they have, in their turn, become the most important animals on the planet. But they are not looking after the earth very well. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. As a result of this, many scientists believe the earth may become too hot to live on. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
给分。

2. 高一英语必修3第四单元所有课文

Reading 2 Last month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer. We visited the moon in our spaceship!
Before we left, Li Yanping explained to me that the force of gravity would change three times on our journey and that the first change would be the most powerful. Then we were off. As the rocket rose into the air, we were pushed back into our seats because we were trying to escape the pull of the earth's gravity. It was so hard that we could not say anything to each other. Graally the weight lessened and I was able to talk to him. "Why is the spaceship not falling back to the earth? On the earth if I fall from a tree I will fall to the ground." I asked. "We are too far from the earth now to feel its pull," he explained, "so we feel as if there is no gravity at all. When we get closer to the moon, we shall feel its gravity pulling us, but it will not be as strong a pull as the earth's." I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.
When we got there, I wanted to explore immediately. "Come on," I said. "If you are right, my mass will be less than on the earth because the moon is smaller and I will be able to move more freely. I might even grow taller if I stay here long enough. I shall certainly weigh less!" I laughed and climbed down the steps from the spaceship. But when I tried to step forward, I found I was carried twice as far as on the earth and fell over. "Oh dear," I cried, "walking does need a bit of practice now that gravity has changed." After a while I got the hang of it and we began to enjoy ourselves.
Leaving the moon's gravity was not as painful as leaving the earth's. But returning to the earth was very frightening. We watched, amazed as fire broke out on the outside of the spaceship as the earth's gravity increased. Again we were pushed hard into our seats as we came back to land. "That was very exhausting but very exciting too," I said. "Now I know much more about gravity! Do you think we could visit some stars next time?" "Of course," he smiled, "which star would you like to go to?"

3. 人教版英语必修三第四单元单词表

我给你个和课后单词表一模一样的，

Unit 4

astronomy
n. 天文学

△astronomer n. 天文学家

△solar
adj. 太阳的；日光的

system n.系统；体系；制度

solar system 太阳系

religion
n. 宗教；宗教信仰

theory n.学说；理论

△Big
Bang 宇宙大爆炸；创世大爆炸

atom n. 原子

billion
pron. & n. & adj.<英>万亿；<美>十亿

globe
n. 球体；地球仪；地球

△global adj.全球性的；全世界的

violent adj.猛烈的；激烈的；强暴的

in time 及时；终于

carbon
n. 碳

△nitrogen
n. 氮

△vapour
n. 蒸气；水蒸气

atmosphere
n.大气层；气氛

unlike prep. 不同；不像

fundamental
adj. 基本的；基础的

△presence
n. 出席；到场；存在

△dissolve
vt. & vi. 溶解；解散

harmful adj.有害的

acid n. 酸

chain
n. 链子；连锁；锁链

△reaction
n. 反应；回应

multiply
vi. & vt. 乘；增加

oxygen
n. 氧

△shellfish
n.水生有壳动物

△amphibian
n. 两栖动物

△reptile
n. 爬行动物；爬虫

lay eggs 下蛋

△dinosaur
n. 恐龙

exist vi.存在；生存

△mammal
n. 哺乳动物

give birth to 产生；分娩

thus adv. 因此；于是

in one’s turn 轮到某人；接着

dioxide
n. 二氧化物

carbon dioxide 二氧化碳

prevent ... from 阻止；制止

puzzle n. 谜；难题

vt.
& vi. （使）迷惑；（使）为难

biology
n. 生物学

biologist n.生物学家

gravity
n. 万有引力；重力

satellite
n. 卫星；人造卫星

gentle
adj. 温和的；文雅的

△geologist
n. 地质学家

physicist
n. 物理学家

block
out 挡住（光线）

△extinct
adj. 灭绝的；绝种的

climate
n. 气候

△comet
n. 慧星

crash
vi. & vt. 碰撞；坠落

△Isaac
Newton 艾萨克·牛顿

（英国科学家）

△Albert
Einstein 陈尔伯特·爱因斯坦（德裔美国科学家）

△Stephen
Hawking 斯蒂芬·霍金（英国科学家）

spaceship
n. 宇宙飞船

pull n.
& vt. 拉（力）；拖；牵引力

△lessen
vi. & vt. 减少；减轻

cheer up 感到高兴；感到振奋

float
vi. & vt. （使）浮动；（使）漂浮

n. 漂浮物

△weightlessly
adv. 失重地

△cabin
n. 小屋；船舱

mass n. 质量；团；块；大量；

<复>群众

now that 既然

△get
the hang of 熟悉；掌握；理解

break out 突发；爆发

△exhaust
vt. 用尽；耗尽；使精疲力尽

watch out 密切注视；当心；提防

4. 英语必修三第四单元Astronomy:the science of the stars的原文 急!!!在线等！！

HOW LIFE BEGAN ON THE EARTH
No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory, the universe began with a "Big Bang" that threw matter in all directions.After that, atoms began to form and combine to create stars and other bodies.

For several billion years after the "Big Bang", the earth was still just a cloud of st. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when
the st settled into a solid globe. The earth became so violent that it was not clear whether the shape would last or not. It exploded loudly with fire and rock. They were in
time to proce carbon, nitrogen, water vapour and other gases, which were to make the earth's atmosphere. What is even more important is that as the earth cooled down, water
began to appear on its surface.
Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. It was not immediately obvious that water was to be fundamental to the development of life. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This proced a chain reaction, which made it possible for life to develop.
Many millions of years later, the first extremely small plants began to appear on the surface of the water. They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish. Next, green plants began to grow on land. They were followed in time by land animals. Some were insects. Others, called amphibians, were able to live on land as well as in the water. Later when the plants grew into forests, reptiles appeared for the first time. They proced young enerally by laying eggs. After that, some huge animals, called dinosaurs, developed. They laid eggs too and existed on the earth for more than 140 million years. However,
65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remains a mystery. This disappearance made possible the rise of mammals on the earth. These animals were different from all life forms in the past, because they gave birth to young baby animals and proced milk to feed them.
Finally about 2.6 million years ago some small clever animals, now with hands and feet, appeared and spread all over the earth. Thus they have, in their turn, become the most important animals on the planet. But they are not looking after the earth very well. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. As a result of this, many scientists believe the earth may become too hot to live on. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.

5. 高一英语必修三第四单元reading的翻译

reading
英来 [ˈri:dɪŋ] 美 ['ri:dɪŋ]
n.
阅读; 读数源; 宣读; 读物
v.
读( read的现在分词); 看懂; 理解; 显示，标明

6. 高一英语必修3 第四单元的课文全文翻译 题目为 How life began on the earth

没有人确切地知道地球是如何开始的，因为那是好久以前的事了。然而，根据广泛接受的理论，宇宙始于“大爆炸”，把物质在所有的方向。在那之后，原子开始形成并结合成恒星和其他天体。
对于“大爆炸”后数十亿年，地球还只是一团尘埃。什么是成为不确定直到4.5至3800000000年前，当尘埃落定成固体地球。地球变得如此暴力，也不清楚是否形状将持续。它的爆炸喷出了烈火和岩石。最终产生了碳，氮，水蒸气和其他的气体，从而形成了地球的大气层。更重要的是，当地球冷却下来，水开始出现在其表面。
水也出现在其他行星火星一样但不像地球，它已经消失了。这是不能立即明显，水是生命发展的基础。很多科学家相信，水的持续存在使得地球把有害气体溶解在海洋里。这产生了连锁反应，使生命发展成为可能。
数百万年后，第一个非常小的植物开始出现在水面。他们繁殖起来，使得海洋充满了氧气，这鼓舞了后来发展早期贝类和各种鱼类。其次，绿色植物开始成长的土地上。他们在之后的时间由陆地动物。有些昆虫。其他人，叫两栖动物，能够在陆地上生活以及在水。后来当植物长成的森林，爬行动物第一次出现。他们通常为卵生。之后，一些巨大的动物，所谓的恐龙，开发。它们产卵也和地球上存在超过140000000年。然而，65000000年前恐龙时代的结束。他们为什么突然消失，仍然是一个谜。这个消失的崛起成为可能的哺乳动物在地球上。这些动物不同于所有生命形式的过去，因为他们生了年轻的动物宝宝和生产的牛奶喂它们。
大约2600000年前的最后一些小聪明的动物，现在手和脚，似乎遍布地球。他们就这样，反过来，成为地球上最重要的动物。但他们不照顾地很好。他们把太多的二氧化碳释放到大气中，从而防止热量从地球逃逸到太空。因此，许多科学家相信地球会变得太热。所以生命是否会在未来的几百万年的地球上继续将取决于是否可以解决这个问题。

7. 人教版高中英语必修3全部内容在线阅读

http://www.pep.com.cn/ge/jszx/qrzgz/gex/dzkb/

不客气

8. 英语必修三人教版第四单元单词录音

一个个单词搜一下就可以了
我找了好多都没有

9. 求人教版英语必修三Unit4课文全文

(图片格式的)
人教版英语必修三Unit4是第25-32页
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