发布时间 : 星期三 文章2017-2018学年高中英语人教版必修三教学案：Unit 4 Section 1 Word版含答案正式版 - 图文更新完毕开始阅读7c6ff8db842458fb770bf78a6529647d26283401
作者逐渐理解了Rose，且两人最终成为了朋友。据此可推断，友谊就是爱和理解。
C
It seems we can't get off the planet fast enough. Two thirds of NASA's money is spent on manned space exploration, and that number will grow with the USA's decision to send a man to Mars in 2037. We've seen all there is to see on Earth, right? Wrong. The final place is here, under the surface of the sea.
Heading down into the ocean, human limits are quickly reached. At 200 metres, the water is as black as a moonless night. Most nuclear submarines (核潜艇) would implode (内爆) before they reach 1 km down. At 3 km — still less than the average depth of the ocean — there's a good chance that you'll discover a new species. The deepest-diving whales go no further. At the very bottom, about 11 km down, lies the Challenger Deep, the deepest part of the Mariana Trench in the Pacific Ocean. Eighteen humans have walked on the Moon, but only three have seen the Deep with their own eyes.
Yet things live down there. Big things. A very loud sound was once heard and scientists suggested that it was produced by an animal bigger than a blue whale, the largest creature known on the planet.
In the late 1990s, deep-water submarine was dropped in the Southern Ocean, and passing 4，000 metres, it discovered something huge passing under it. Surprised? Don't be. The ocean covers 70% of the planet's surface and we've studied less than 5% of it. We know more about the dark side of the Moon than about the bottom of the sea.
One reason that we explore space is to find evidence of other life forms. The search for life outside of Earth is important, but robots can look under the dry rocks of Mars better than humans. They're absolutely important for doing ocean research too, but they can't look under the sea. The cost of exploration is rising, but the results would benefit all our lives. Understanding the oceans will help us find new sources of food, drugs and energy.
Perhaps now it's time to begin a new period of sea exploration. Manned exploration of space is science fiction (科幻小说). The adventure of the deep sea is science fact.
语篇解读：本文是议论文。作者在文中讨论了进行海洋探索的重大意义。 9．What do we know about the Challenger Deep? A．Blue whales live there. B．No one has ever been there. C．People are terrified by the sight of it. D．It is the deepest known location on Earth.
解析：选D 细节理解题。根据第二段中的“the Challenger Deep, the deepest part of the Mariana Trench in the Pacific Ocean”可知，挑战号深渊是地球上目前已知的最深的海底。
10．What does the author think of the discovery in the Southern Ocean? A．It's surprising. B．It's no wonder. C．It's worrying. D．It's no success.
解析：选B 观点态度题。根据第四段中的“Surprised? Don't be. The ocean covers 70% of the planet's surface and we've studied less than 5% of it. We know more about the dark side of the Moon than about the bottom of the sea.”可知，作者认为南冰洋中可能存在比蓝鲸更大生物的发现不足为奇。
11．Why do we need to explore the sea? A．Sea exploration is cheaper than ever before. B．We have explored less than 5% of the sea. C．It will help improve our future life. D．It will benefit space exploration.
解析：选C 细节理解题。根据倒数第二段中的“the results would benefit all our lives. Understanding the oceans will help us find new sources of food, drugs and energy”可知，海洋探索将造福人类。
12．What does the author want to tell us? A．Space exploration is of little value. B．We spend too much money on space travel.
C．Humans' success lies in how much they explore the sea. D．The ocean is the place where we should make our efforts.
解析：选D 主旨大意题。作者在文章第一段就点出自己的观点：“The final place is here, under the surface of the sea.”，并在接下来的段落中具体论述海洋探索的重大意义。由此可知，D项概括了文章主旨。
[课文对译]
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 dust. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. The earth became to 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 produce carbon dioxide,
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 produced 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 produced young generally 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 produced 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.
地球上生命的起源
没有人确切知道地球是怎样开始形成的，因为在很早以前它就形成了。然而，一种普遍为人们所接受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。然后，原子开始形成并结合成恒星和其他天体。
大爆炸后好几十亿年过去了，但地球还只是一团尘埃。随后它会变成什么没人能知道，直到38－45亿年前，这团尘埃才慢慢地形成一个固体的球状物。地球(开始)变得激烈动荡，不知道这个固体形状是否会继续存在下去。它(地球)猛烈地爆炸喷出了烈火与岩石，最终产生了二氧化碳、氮气、水蒸气和其他多种气体，从而形成了地球的大气层。更为重要的是，地球冷却了下来，地球的表面就开始出现了水。
在火星这些其他行星上都出现了水，但和地球不同的是，这些水后来都消失了。水会对生命的发展起关键作用，这一点在当时并不明显。很多科学家认为，由于地球上长期有水存在，使得地球得以把有害气体和酸性物质溶解在海洋里。这就产生了一系列的反应，使得生
命就有可能开始发展了。
好几百万年以后，水的表面开始出现了极小的植物。它们繁殖起来就使得海洋充满了氧气，这为早期的贝类及其他各种鱼类后来的进化创造了条件。接着，绿色植物开始出现在陆地上。随后，陆地上出现了动物，其中有一些是昆虫，另外一些叫两栖动物，它们既能在陆地上生活，也能在水里生存。后来，当植物长大成了森林的时候，爬行动物出现了。它们一般是通过孵蛋而繁衍后代的。再后来一些叫做恐龙的巨型动物出现了。它们也生蛋，在地球上生存了一亿四千多万年。然而，六千五百万年前，恐龙时代结束了。它们为什么会突然灭绝至今仍是个谜。恐龙的灭绝使地球上哺乳动物的增多有了可能。哺乳动物不同于以往所有的生物形式，因为它们能从体内生产出幼仔并给幼仔哺乳。
最后，大约260万年前，一些小巧聪明、长着手脚的动物出现了，它们散布在地球的各个地方。于是，他们接着成为了这个行星上最重要的动物。然而，他们对地球却不怎么在意，他们把过多的二氧化碳释放到大气层中，这使得地球上的热不能释放到太空中去。因此许多科学家相信地球可能会因此变得太热而不适合生物的生存。所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。
人品好的人，自带光芒，无论走到哪里，总会熠熠生辉。人活着，谁都会有烦恼，每天都有烦恼，最重要的是你不理会烦恼，烦恼自然就没有了！因此，朋友们，最好的活法，就只要记住这两句话：烦恼天天有，不捡自然无！当你不开心的时候，想想自己还剩下多少天可以折腾，还有多少时间够你作践。你开心，这一天过了；不开心，一天也过了。想明白了，你就再也不会生气了。当你烦恼的时候，想想人生就是减法，见一面少一面，活一天就少一天，还有什么好烦恼的呢，不忘人恩，不念人过，不思人非，不计人怨。不缺谁，不少谁，对得起良心就好。当你忧伤的时候，想想生活就是一场路过，赤条条来，赤条条去，带不来一丝尘土，带不走半片云彩。什么功名利禄，什么人情往份，啥你都带不走，想明白了，还有什么好难过的？当你不满的时候，想想和富人比，我们活着知足就是幸福。和病人比，我们活着健康就是幸福。和死人比，我们还活着就是幸福。人这辈子想活好，心要简单，人要糊涂。当你生气的时候，想想是否有必要为不值得的人生气？有必要为不值得的事闹心？好好吃饭，好好睡觉，好好养老，好好花钱就可以了。你好好的，家人好好的，一切也就好好的了！当你计较的时候，想想人在世间走，本是一场空，何必处处计较