Secret codes (密码)keep messages private。Banks, companies, and government agencies use secret codes in doing business, especially when information is sent by computer.
People have used secret codes for thousands of years. 36 Code breaking never lags(落后) far behind code making. The science of creating and reading coded messages is called cryptography.
There are three main types of cryptography. 37 For example, the first letters of "My elephant eats too many eels" Spell out the hidden message "Meet me."
38 You might represent each letter with a number, For example, Let's number the letters of the alphabet, in order, from 1 to 26. If we substitute a number for each letter, the message "Meet me" would read "13 5 20 13 5."
A code uses symbols to replace words, phrases, or sentences. To read the message of a real code, you must have a code book. 39 For example "bridge" might stand for "meet" and "out" might stand for "me." The message "bridge out" would actually mean "Meet me." 40 However, it is also hard to keep a code book secret for long. So codes must be changed frequently.
| A． |
It is very hard to break a code without the code book. |
| B． |
In any language, some letters are used more than others. |
| C． |
Only people who know the keyword can read the message. |
| D． |
As long as there have been codes, people have tried to break them. |
| E． |
You can hide a message by having the first letters of each word spell it out. |
| F． |
With a code book, you might write down words that would stand for other words. |
| G． |
Another way to hide a message is to use symbols to stand for specific letters of the alphabet. |
These days everyone wants to "get rich" fast. We all marrying someone from a wealthy family, making a big or winning the lottery (彩票). But do these things really make us happy? Many of the richest celebrities (名人）happen to be some of the most people. They buy expensive houses and clothes that they use. They may become and even become addicted to . They have become so money and material things that they forget about the people and activities they love.
Now, more young people have the opportunity for a better education, and better chances of making a high . These are great achievements, but will they make you happy? In the US many young people believe that being rich and being happy are two things. When university, they often choose to study subjects that they are interested in subjects that will get them high-paying jobs. Instead of in "business" or "management", many American students today have majors like "theater", or "modem dance". The is that making a lot of money doesn't mean that you will be with your life. Nowadays, young people are careers that they love doing instead of careers that pay well.
I think that as being becomes more possible, we need to what the term "fortune" really means. Do we need to have money or material things to be ？Or does fortune just mean having what we need to be happy? , what things make you happy? Be honest with yourself. It may take a rich spouse (配偶) or much money to make you happy!
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The leaves fluttered (飘动)over Josh's head. The park near his home had always been one of Josh's 1 places. ①He liked to watch the colors of the trees glow (闪耀）in the sunlight, 2 the golden trees. It was the same color as his trumpet (小号）.He smiled when he 3 the music the leaves made. Josh sat down and looked at his watch. His father would meet him in a few 4 for their first practice in the park.
Josh and his family lived in an apartment building. When Josh first began playing the trumpet, he 5 in his own living room. Then the family next door had a new baby. To avoid 6 the baby, Josh would 7 his practice time in the park. His father told him it would be good to practice in a wide，open 8 like the park. The baby next door would be able to sleep 9 , but Josh was not very happy with the 10 . He enjoyed visiting the park，but he didn't want to practice there. He was 11 that he would embarrass (使……难堪）himself in a pubic place if he played the wrong notes (音符).He didn't want people to 12 him as he played in the middle of the park.
Josh's father was a great trumpet player, who once played in a jazz band. He couldn't possibly understand how 13 it would be to practice in the park!
His father came over and 14 Josh's daydream. "Josh, are you ready to practice?" He sat down and 15 his own trumpet from its case. He held the trumpet to his 16 and began to play. The beautiful music floated into the blue afternoon sky.
Josh looked up at the golden trees. The leaves 17 to be dancing to the tune his father was playing. Josh felt 18 as he watched the people walking by and smiling at his father.
He 19 to play like that. Josh put his trumpet to his mouth and blew. He had such a great time that he didn't 20 if he played a few bad notes. Now he and his neighbors could all be happy.
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写出同义句，一空一词 Some of the things CMHS offers are beyond your expectation.
CMHS has much_______ you expect.There are twelve science labs and different experiments are done in different labs.
Twelve science labs are_______for different experiments. Each room is equipped with a bathroom.
Each room ______________ its own bathroomWe make sure that we take good care of students in our school.
We make sure that students _______ _______ _______ _______ in our school. When he finished his studies, he started travelling in China.
_______ _______ his studies, he started travelling in China.
阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。注意：每个空格只填一个单词。
Many people need guidance in choosing a career （职业）. Fortunately, there is much information on the Web about job opportunities （机会）. With all the information available, it's not surprising that people can feel confused. So if you're ready to start your first job or change careers, where do you begin?
The Occupation Handbook is a good resource. Regularly updated, the Handbook is available as a book and on-line. Not only is information provided about the United States as a whole, but readers can easily search for information about their particular state. You can read about the fastest-growing occupations in the area where you live and find out what they are like. You can also learn how to apply for jobs.
Take, for example, Nadia's situation. Nadia was a doctor's assistant in Iran, and her goal in the United States is to become a nurse. However, she needs to work while she is studying nursing. She is interested in becoming a medical assistant to help work her way through college. When going on-line to the Handbook and searching under "medical assistant", Nadia is happy to read that this is expected to be one of the fastest-growing careers through 2010. Besides, job opportunities are even better for people with experience. She discovers that medical assistants not only have to do some office work, but have medical responsibilities as well. Nadia decides this job will be interesting and will also provide excellent experience for her nursing career.
The Occupation Handbook is just an example of websites that can help you plan a new career. When you have found information about some different careers, you will be ready to talk to career advisers. Choosing your future career is an extremely important decision. It's worth taking the time and finding as much information as you can.
| Title |
Finding information on the |
| Introduction |
☆ There is a lot of job information on-line, but too much of it may sometimes be |
| Facts of the Handbook |
☆ The information is updated in a ☆ Its vast resources include ways of job |
Nadia’s |
☆ She wants to become a nurse in the United States. he needs to work to make ☆ Her previous ☆ If she’s a medical assistant, he’II also take medical |
| Conclusion |
☆ Find some information on-line before ☆ The time you spend and the efforts you make will be |
I'll never forget the first day at school. It has left a deep 1 on me.
The primary school that I attended was not far from my home. As soon as I rushed into the classroom, the bell 2 . A young beautiful woman came in, but she was 3 , with no smile on her face. "You are not permitted to 4 me in the course of class unless..." She was speaking when I heard a 5 "Lily, Lily" from outside the door.My grandmother was standing there with a pair of socks in her hand. I didn't realize I was bare feet 6 then. I wanted to 7 them. But I dared not do that. I shook my hand, 8 "Don't wait here any longer. Leave quickly." As I did so, I still 9 my eyes on my teacher. I really didn't want her to take 10 of me, but she did. She went out to get the socks. When she gave them to me, she looked at me for a while. My face suddenly turned 11 and my heart beat faster. I began to put the socks on. Unfortunately I was so nervous that my 12 hands couldn't get them 13 my feet easily. Just then I heard my name called. I 14 from my seat quickly. "Can you count the numbers from one to one hundred?" the teacher asked. I nodded. Much 15 her surprise, I did very 16 . Finally she said, "You did a good job. Be seated, please. Work hard at your lesson." I looked up at her to find a(n) 17 on her face. I felt 18 at last.
The first day at school has stayed in my 19 as something 20 but sweet.
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