A

If you and your friends wish to share a secret, you can write it in code, and no one else will be able to read it. Codes are one way of writing in secret. Ciphers (密码) are another. In a code each word is written as a secret code word or code number. In a cipher each letter is changed.

Codes and ciphers have played an important role in the history of the world. Julius Caesar, the Roman ruler who defeated almost all the countries in Europe about 2, 000 years ago, used a cipher when he sent secret messages to his troops. During the American Revolution, George Washington's spies used a kind of code to send him information about the enemy before his military action. In World War Ⅱ, the Americans "broke", or figured out, Japan's most important naval codes and got enough information to destroy a powerful Japanese fleet(舰队).

Storekeepers use codes to mark their goods. The codes show how much was paid for the goods or when they were added to the stock. Businessmen use codes to hide plans from their business enemies. Sometimes personal letters or diaries are written in code. Many people enjoy figuring out codes and ciphers simply as a hobby.

In the 16th century, codes and ciphers were very popular among scientists. They wrote messages to each other in code so that no one else would learn their secrets. Geronimo Gardano, an Italian astrologer(占星家), mathematician, and doctor, invented the trellis cipher. He took two sheets of paper and cut exactly the same holes in each one. Then he sent one sheet, which he called a trellis, to a friend and kept the other for himself. Whenever he wanted to write a message, he put his trellis over a clean sheet of paper and wrote the secret message through the holes. Then he removed the trellis and filled the rest of the paper with words that would make sense. When his friend received it, he put his trellis over the writing and read the secret message.

What does the underlined word "trellis"mean?

A. A piece of paper with many small holes.          B. A machine with a lot of small holes.

C. A letter with unreadable words and sentences.   

D. A sheet of paper with groups of Arabic figures.

Which of the following statements is true?

A. Ciphers can be broken or figured out more easily than codes.

B. You could read some words in Geronimo' s letter without his trellis.

C. The first person who ever used a cipher in history was Julius Caesar.

D. Fondness of using codes was the hobby of the scientists in the 16th century.

The best title of this passage is________.

A. Codes and Ciphers                  B. Differences between Codes and Ciphers

C. History of Codes and Ciphers         D. Inventors of Codes and Ciphers

B

For a song to become popular, people need to bear it.  In order for people　to hear it, the program directors at radio stations have to play it on the air. A song’s popularity is directly related to how often it is played. That is a big responsibility for program directors. How do they decide what gets played and what doesn’t?

In the past, disc jockeys(音乐节目主持人) decided what music was played on the radio. These DJs had an ear for music and an understanding of what their audience wanted to hear. Today, that is all changing. Most major radio stations are owned by a few large national businesses. The decision of what gets played on the radio is made by executives(主管) who have little or no interest in music. They do, however, know how to run a business, and they know what sells. So, the music industry designs and creates pop entertainers, and executives in the radio industry make sure that their music is played on the radio. This explains why you do not often hear anything new and fresh on the radio. The executives do not want to give air time to music that has not been tested on the market. It is too risky. They prefer to go with music that they already know will sell. They know it will sell because it sold last week and last month and last year. They just have to change it a little.

One of the most criticized(批评) practices in the music industry is the practice of “payola”. This is when record companies pay radio stations to play the music of a given artist. This practice makes many people lose trust in the music industry and is therefore against the law. A radio station can accept money in exchange for air time of a song, but they have to make it clear that the song is being played because its air time was paid for. They cannot present the song as if it were part of the normal play schedule(时刻表).

Payola affects both artists and audiences. The artists who work with small record companies that cannot pay a lot of money to radio stations have a much harder time getting exposure. It creates an unfair playing field. Music lovers suffer because they are not able to hear all the music that is available.

60. According to the passage, most major radio stations belong to       .

A. national businesses                      B. program directors   

C. pop entertainers                         D. record companies

61. “Payola” is the practice of        .

A. artists paying radio stations to play their songs

B. record companies buying air time for certain music

C. radio station paying record company for new songs

D. program directors deciding what music gets played

62. Who can make the largest profits from payola?

A. Disc Jockeys.                               B. The given artists.

C.  Business executives.                        D. Program directors.

63. It can be concluded from the passage that the author        .

A. has a positive attitude towards the practice of “payola”

B. is dissatisfied with the present situation in music industry

C. is calling for a change in the normal play schedule

D. thinks that the radio stations are doing the right thing

C

As A/H1N1 continues to spread, experts from the Centers for Disease Control to the World Health Organization to neighborhood doctors are calling on the people to practice smart flu prevention techniques. Here are some tips to keep body improved and immune（免疫）system ready to fight infection.

Wash Your Hands

And wash them often, in hot soapy water, and for the amount of time it takes you to sing “Happy Birthday” twice.

Get Enough Sleep

This means slightly different things to different people, but try to get 8 hours of good rest each night to keep your immune system in top flu-fighting shape.

Keep Hydrated

Drink enough water each day to clear poisonous matter from your system and keep up good moisture（湿度）production in your body.

Eat Immune-Improving Foods

Keeping you body strong and ready to fight infection is important in flu prevention. Fatty foods can slow your metabolism（新陈代谢）, make you feel inactive, and weaken your immune system. So stick with whole grains, colorful vegetables, and vitamin-rich fruits.

Avoid Alcohol

Alcohol is likely to decrease your resistance to infections and further damages the immune system. So avoid alcoholic drinks to keep your immune system strong.                         

Proper exercise-for example walking for 30-40 minutes 3-4 times a week-supports the immune system by increasing circulation, oxygenating the body, removing poisonous material through sweat, and reducing tension and stress. So get moving!

Avoid Contact with Sick People

If you’re coughing or sneezing, cover your mouth(and then wash your hands),and if you have to be around someone who is sick, try to stay a few feet away from them and avoid physical contact.

Know When to Get Help

A/H1N1 can look like regular flu, so don’t feel like you necessarily are infected if you’re exhibiting flu-like symptoms（症状）. But do go to your doctor if you live in an area where there are recorded cases, or if your symptoms are very serious.

44．To fight A/H1N1 infection, it’s helpful for us to_______ .

       A．sing “Happy Birthday” while washing hands

       B．eat more fatty foods and colorful fruits

       C．keep away from alcoholic drinks

       D．refuse communication with patients

45．A suitable title for paragraph 7 might be _______.

       A．Support the Immune System     B．Keep Physically Active

       C．Get Enough Sweat             D．Walk to Reduce Stress

46．The passage seems to suggest that we should_______.

       A．get enough sleep after eating fatty foods

       B．wash hands with soap after a cough or sneeze

       C．drink more water after drinking alcohol

       D．see a doctor immediately if you have flu-like symptoms

47．What can help clear poisonous matter from the body?

       A．Washing your hands.       B．Eating fatty foods.

       C．Getting enough sleep.      D．Drinking enough water.

B

For a song to become popular, people need to bear it.  In order for people　to hear it, the program directors at radio stations have to play it on the air. A song’s popularity is directly related to how often it is played. That is a big responsibility for program directors. How do they decide what gets played and what doesn’t?

In the past, disc jockeys(音乐节目主持人) decided what music was played on the radio. These DJs had an ear for music and an understanding of what their audience wanted to hear. Today, that is all changing. Most major radio stations are owned by a few large national businesses. The decision of what gets played on the radio is made by executives(主管) who have little or no interest in music. They do, however, know how to run a business, and they know what sells. So, the music industry designs and creates pop entertainers, and executives in the radio industry make sure that their music is played on the radio. This explains why you do not often hear anything new and fresh on the radio. The executives do not want to give air time to music that has not been tested on the market. It is too risky. They prefer to go with music that they already know will sell. They know it will sell because it sold last week and last month and last year. They just have to change it a little.

One of the most criticized(批评) practices in the music industry is the practice of “payola”. This is when record companies pay radio stations to play the music of a given artist. This practice makes many people lose trust in the music industry and is therefore against the law. A radio station can accept money in exchange for air time of a song, but they have to make it clear that the song is being played because its air time was paid for. They cannot present the song as if it were part of the normal play schedule(时刻表).

Payola affects both artists and audiences. The artists who work with small record companies that cannot pay a lot of money to radio stations have a much harder time getting exposure. It creates an unfair playing field. Music lovers suffer because they are not able to hear all the music that is available.

60. According to the passage, most major radio stations belong to       .

A. national businesses                       B. program directors   

C. pop entertainers                          D. record companies

61. “Payola” is the practice of        .

A. artists paying radio stations to play their songs

B. record companies buying air time for certain music

C. radio station paying record company for new songs

D. program directors deciding what music gets played

62. Who can make the largest profits from payola?

A. Disc Jockeys.                               B. The given artists.

C.  Business executives.                        D. Program directors.

63. It can be concluded from the passage that the author        .

A. has a positive attitude towards the practice of “payola”

B. is dissatisfied with the present situation in music industry

C. is calling for a change in the normal play schedule

D. thinks that the radio stations are doing the right thing

For the most part, you are probably only exposed to the music that is played on your favorite radio stations and TV shows, music Web sites, or the music that your friends and family members enjoy. While you probably know a lot about your favorite type of music, it can be a rewarding experience to enlarge your horizons（眼界）, discovering artists and types of music that you’re not familiar with. Who knows, you might discover you like certain types of music you never even considered.
Have you ever wondered about the history and influences of your favorite types of music ? For example, did you know that rock ‘n’ roll originated（起源）from the blues, and that the blues began as a form of musical expression for African Americans during slavery（奴隶制度）？Did you know that most hip-hop is heavily influenced by early rhythm blues and jazz ?
There are many fun ways to learn about different musical styles and their historical roots. For example, if you like hip-hop, listen to some of your favorite CDs and take note of the samples the performers used to create the songs. There is a possibility that the artist used parts of older songs to create the music. You can go to the library or online to learn more about the artists and listen to more of their music by checking out CDs from the library or downloading songs online for a small fee.
You can learn so much about culture and history just by paying attention to different types of music and what is being expressed in the songs. There are so many different styles of music to learn about, and you owe（欠）it to yourself to make an effort to listen to and learn about them.

1. 1.

   The main topic of this passage is _____.

   1. A.
      creating music
   2. B.
      performing music
   3. C.
      enjoying your favorite music
   4. D.
      learning about music
2. 2.

   What music did African Americans use to express their feelings of being slaves ?

   1. A.
      Rock ‘n’ roll.
   2. B.
      The blues.
   3. C.
      Hip-hop.
   4. D.
      Jazz.
3. 3.

   How can you learn about culture and history through music ?

   1. A.
      By writing down the names of the music.
   2. B.
      By creating music from older songs yourself.
   3. C.
      By caring about what is being expressed in music.
   4. D.
      By keeping a record of fees after downloading songs online.
4. 4.

   By saying the underlined sentence in the last paragraph, the author probably means that _____.

   1. A.
      you should try harder to learn about music
   2. B.
      you should return something to music
   3. C.
      you should borrow music CDs from others
   4. D.
      you should buy music CDs yourself