人类的色盲很难解释。在一只眼睛(a single eye)里有几百万(millions of)叫做“视锥”的微小物质。它们帮助我们在亮光(bright light)下看清并辨别颜色的差异(tell the difference between colors)。单眼中也有几百万“视网膜杆”，但它们是用来(be used for)在天色几乎(nearly)黑下来时看清东西的，它们为我们显示形状(shape)而非颜色。
一些鸟和动物的眼睛有很少(few)或没有视锥，所以它们看不到颜色。猫和狗不能和我们一样看清颜色。
一些昆虫甚至可以看到X射线(X-ray)。科学家们知道，我们周围有些其他颜色昆虫可以看到而我们却无法看到。
人类有最偏爱的颜色。蓝色常受欢迎是因为它是凉爽的天空和海洋的颜色。绿色是让我们想起草地、骤野和森林的颜色，黄色是太阳(sun)色。另一方面，红色是血(blood)与火(fire)的颜色，使一些人想起事故、危险和流血。黑色是夜的颜色．在黑暗中(in the dark)，我们看不到周围的一切，所以我们有时害怕未知的(unknown)事物，不喜欢黑色。
52. Computers Are Becoming More and More Popular
More and more people are living the life with computers. Using computers you can send e-mails quickly and easily. You are able to send a letter with photos and sounds to someone anywhere in the world without putting a stamp. E-mail can send its message to the other side of the world in seconds E-mail is easy to use and it saves time and money. It serves for twenty-four hours. You can send e-mails to your friends when they are in bed, and when they send e-mails back, maybe you're seeing a film at the cinema Computers are also important far students now. Many students like to surf the Internet, but some students only play games instead of searching for useful information and learning from the Internet. Besides, they spend too much time on the computer, which is very bad for their health. Can you imagine in the future without teachers but computers? Students will teach themselves in the schoolq in the future. At that time, students will carry a personal computer (PC) instead of a book bag. And teachers will disappear. Computers help students develop their own ways of learning. Students will follow the learning programs by looking at on-line(在线的)libraries and watching lessons, Students can take advantage of all kinds of learning websites
52.电脑越来越普及
越来越多的人在使用电脑。通过电脑你可以迅速快捷地发送电邮（e-mail）．你能够发送附带照片和声音的邮件给世界上任何地方(anywhere)的人而无需粘贴邮票。电邮可以在几秒中(in seconds)把邮件发送给地球另一边的人。电邮使用方便，节省时间和金钱。可以24小时地服务(serve)．当你的朋友在床上睡觉时你可以给他们发邮件，当他们给你回复邮件时，可能你正在影院(at the cinema)看电影(see a film)。
- 11 -
现在电脑对学生也很重要。许多学生喜欢上网(surf the Internet)，但一些学生只玩游戏而不是通过电脑查找有用信息及学习。此外，他们花太多时间用电脑，这对他们的健康非常不利。
你能想象(imagine)未来没有教师只有电脑吗？未来(in the future)学生们将在学校里自学。那时，学生会携带一台个人电脑(personal computer)而不是一个书包．教师将会消失(disappear)。电脑帮助学生培养他们自己的学习方式。学生通过在线图书馆跟踪学习节目
53. Dialogue: Chinese Food
W: Waitress, G: Guest
W: Good afternoon, sir. We have both Chinese food and western food. Which do you like better, Chinese or Western?
G: I'll have Chinese food for a change today. I like Chinese food very much, you know. W: I'm glad to hear that This way, please ... Here is the menu for today.
G: Thanks. This is my first visit to China Could you tell me what different kinds of Chinese food you serve here?
W: As you can see from the menu, we serve Shanghai food, Guangdong food and Sichuan food.
G: Could you tell me more about them?
W: With pleasure. Generally, Guangdong food is a bit light, Sichuan food has a strong and hot taste, Shanghai food is rather oily.
G: Very interesting. There are so many kinds of dishes of different tastes It's hard to decide which to take. But I think I'll have Sichuan food this time as I like hot food I'd like to have some standard Sichuan dishes.
W: Would you like pork shreds with fish seasoning(鱼香肉丝) , chicken cubes with chili peppers(辣子鸡丁) and sour pungent soup(酸辣汤)? G: Very nice. Let me try them
W: We usually serve the food first and then the soup, but we'll bring you the soup first if you like.
G: I'm used to having soup first.
W: All right, sir. I'll get it for you right now.
53.对话：中餐
W:女服务员，G:客人(guest)
W:下午好，先生。我们这里有中餐也有西餐(western food)．您要点中餐还是西餐？ G:今天我想吃中餐换个口味。你知道我很喜欢中餐的。
W:很高兴听您这么说。这边请……这是今天的菜单(menu)。
G：谢谢，这是我第一次来中国。请给我讲讲这里都供应哪些中国菜！ W:正如您在菜单上所看到的，我们供应四川菜、广东菜和上海菜 G:能给我详细介绍一下吗？
W：非常乐意(with pleasure)。一般来说(generally)，广东菜口味清淡些(a bit light)，四川菜味道重、辣，上海菜相当油腻(rather oily)。 G：非常有趣。这么多不同口味的不同菜肴(dish)，很难决定吃哪种了。但这次我想吃四川菜，因为我喜欢辣的。我想要些标准的(standard)四川菜。
- 12 - (program)，观看课程。学生可以利用(take advantage of)各种学习网站(website)。
W:那您看鱼香肉丝、辣子鸡丁和酸(sour)辣汤怎么样？ G:非常好，让我尝尝吧。
W:我们通常是先上菜后上汤，但我们可以根据您的要求给您先上汤。 G:我习惯先喝汤(I'm used to having soup first)。
W:好的，先生。我马上给您端上。
54. Frogs Longing for a King
There once lived many frogs in a great pond under a bridge They had an excellent home and all the food they wished, but they were not satisfied They made speeches in the pond. They said they should have a king, Then they asked the God to give them a king. The God gave them a big piece of wood The wood did not move at all, so the frogs went to ask the God to give them a king which could take action. The God sent them an eel(鳗鱼), but the frogs thought the eel was too small and did not look like a king, so the eel was not welcome in the pond. Then the frogs went to the God again, for the last time, the frogs were given a stork(白鹤)as their king. They believed the stork was great, which could rule over them, so they showed honor to the stork. But the stork ate all the frogs one by one until there was hardly any frog left in the whole pond. How much better it would have been for the frogs if they had been satisfied with their life!
54.渴望国王的青蛙
从前有许多青蛙(frog)住在桥(bridge)下的一个大池塘(pond)里。他们有极好的(excellent)家，还有很多喜欢的食物，但它们并不满意(satisfied)。他们在池塘里发表演讲(speech)。它们说它们应该有个国王。然后它们请求上帝(the God)给它们一个国王。上帝给了它们一大截木头(wood)。木头根本不(not...at all)动，于是这些青蛙去找上帝，要求给它们一个能够采取行动(take action)的国王。上帝给它们送来一条鳗鱼，但青蛙们认为鳗鱼太小了，看起来不像(look like)个国王，因此这条鳗鱼在池塘里不受欢迎(not welcome)。然后它们又去找上帝了，最后一次，上帝给了它们一只白鹤当它们的国王。它们认为这只白鹳很伟大，可以统治它们，于是它们对白鹳表示尊敬(honor)。但这只白鹳却把所有的青蛙一个接着一个吃掉了，整个池塘几乎没有(hardly any)青蛙了。
如果这些青蛙对它们的生活满意的话那该多好啊！
55. TV's Value
Many people who are alive today know what it is like to live in a world without television. Television is only about forty years old. Yet it has been an important part in our lives.
Some people think that the years before television were a better time. They believe that families talked more and did more things together. More books were read. People got more outdoor exercise.
- 13 -
But others disagree They say that television is a good tool for education It tells us what is happening in the world. It provides plenty of fun for us. It helps us understand how people live and work.
Although some people describe television as a great teacher, others say television has caused the poor reading and writing skills of our people Television gets praise for helping us understand the people of the world. But it also has influence on family life. Television tells us the news of the day. But it can also make us lazy by giving only short news instead of telling the whole story.
Even people who love television are not happy with it. They think there are too many advertisements on television. People will probably continue to discuss about television’s value. But everyone agrees that it is one of the most important inventions of the twentieth century.
55．电视的价值
很多现在还在世的(alive)人知道没有电视时人们的生活情形。电视出现至今只有40多年的时间，然而(yet)它已经成为我们生活中一个重要的部分。
有些人认为电视出现之前的日子更美好。他们说过去家里人花更多的时间在一起聊天，或一起做更多的事，他们会读更多的书，进行更多的户外锻炼(outdoor exercise)。
但有些人不同意。他们说电视是很好的教育工具，它让我们了解世界各地发生的事情，它为我们提供了很多娱乐(plenty of fun)，它帮助我们了解人们如何生活和工作。
尽管(although)有人把电视描述(describe)为了不起的教师，但也有人说人们读写技能(skill)的降低是电视导致的。电视因帮助我们了解世界各地而得到赞扬(praise)，但电视也对家庭生活有影响(influence)。电视让我们了解当今的新闻时事，也让我们变得懒惰(lazy) ——我们只能获悉简短的新闻摘要，而不是整个事件的始末。
甚至连喜欢看电视的人也对它不满意。他们说电视里的广告(advertisement)太多了。人们很可能还会继续讨论(discuss)电视的价值(value)。但有一点人们已经达成共识，那就是电视是20世纪(the twentieth century)最重大的发明(invention)之一。
56. The Flower-bed's Secret (1)
Once there was an English prince(王子). His name was Henry. Prince Henry liked to study languages, but smiles never came on his face. His father, the King, loved him dearly, and tried to make him happy in every possible way.
The King gave the boy a small horse, so that he might ride when he liked. The King also had a boat made for the Prince, so that he might sail on the lake.
Yet the young Prince was not happy. One day the King had an interview with a man named Sir Arthur. Prince Henry was also there, with an unhappy face, as usual
Sir Arthur turned to the King, and said; “1 have a method to make Prince Henry happy, but you have to send him to the countryside “At first, the King refused, but Sir Arthur insisted on taking the Prince to the country, finally, the King agreed.
56.花坛的秘密(1)
从前有位英国王子叫亨利。亨利王子喜欢学习语言，但他的脸上从来没有笑容。他的父亲即国王非常爱他，尽力用所有可能的方法让他快乐。 国王给这个男孩一匹小马(small horse)，这样他乐意时就可以骑马。国王还让人给王子造了一艘小船(The King also had a boat made for the Prince)，这样他可以在湖上(on the lake)航行。
- 14 - 然而（yet）年轻的王子还是不快乐。有一天国王会见(interview) 一位亚瑟爵士。亨利王子也在那里，一副不开心的样子，和平时一样(as usual)。 亚瑟爵士转向(turn to)国王，说，“我有一个方法(method)可以让亨利王子快乐，但您必须送他去乡下(countryside)。”起初(at first)，国外拒绝了，但亚瑟爵士坚持(insist)带王子去乡下，最后，国王同意了。
56. The Flower-bed's Secret (2)
Prince Henry and Sir Arthur went to Sir Arthur's house. His big yard was divided into two parts-inside yard and outside yard, and the outside yard was a big garden with a flowerbed. Sir Arthur cancelled all his activities and stayed with the Prince at home He told Henry, “Do you know my flowerbed can talk, and it has a secret.”The prince thought it very strange. Sir Arthur went on, “it tells the secret only to those who watch it every day. If you learn the secret, you will be happy every day in the year.” Prince Henry looked, but there was no flower, not even a leaf upon it.
Then he circled the flower-bed every day, even a storm came he didn't go inside, so he caught a cold and coughed badly.
Many days passed——The flowerbed was wet, and the warm sun shone upon it. At last, one fine morning, he saw tiny plants coming up.
Day after day he saw that these plants made lines, and that the lines formed some letters. He thought about the spelling and tried to translate them into his own language At last, he got it: DO SOME GOOD TO SOMEONE EVERY DAY.
56.花坛的秘密(2)
亨利王子和亚瑟爵士去了亚瑟爵士的家。他的大院子被分成(be divided into)两部分一里院和外院，外院是一个有花坛的大花园。亚瑟爵士取消(cancel)他所有的活动，在家里陪着王子。他告诉亨利，“我的花坛会讲话，它有一个秘密。”王子觉得很奇怪。亚瑟爵士继续说道，“它只把秘密说给那些每天关注它的人。如果你知道了这个秘密，你会在这一年里每天都快乐。” 亨利王子看着花坛，但上面没有花朵，甚至连一片树叶也没有。然后，他每天围绕(circle)花坛转，即使暴风雨(storm)来临他也不进屋，结果他感冒(catch a cold)了，咳嗽(cough)不止。 许多天过去了……花坛被打湿了，然后温暖的太阳又照在上面。终于，一个美好的早晨，他看到微小的植物长出来了。 日复一日，他看到这些植物长成一条条线(line)，然后这些植物线条构成(form)一些字母。他思考着将这些字母拼写(spell)成单词，然后翻译(translate)成他自己的语言。终于，他明白了：每天为别人做点好事。
57. Lewis and Clark Reach the Pacific
I clean the rain off my face. Most explorers (探险家) hope to find land, but Meriwether Lewis and I, William Clark, came all the way from St. Louis to reach the Pacific Ocean. I turn around and face the rest of our ship members.
“We did it!” I shout, putting up our flag. Everyone cheers as loudly as waves(波浪) hitting the rocks. “We've paddled (划桨) upstream, walked a long way over snowy mountains, and faced hunger and many other dangers. ”
At the time, I see the girl. She keeps silent “Of course, without the help of our Indian friend, we wouldn't have made it Thank you, miss.”
- 15 -