The next time you go into a bank, a store, or a supermarket, stop and listen. What do you hear？（1）{#blank#}1{#/blank#}It's similar to the music you listen to, but it's not exactly the same. That's because this music was especially designed to relax you, or to give you extra energy. Sometimes you don't even realize the music is playing, but you react to the music anyway.

          Quiet background music used to be called “elevator(电梯)music” because we often heard it in elevators. But lately we hear it in more and more places, and it has a new name “Muzak”. About one-third of the people in America listen to “Muzak” every day. The music plays for 15 minutes at a time, with short pauses in between. It is always more lively between ten and eleven in the morning, and between three and four in the afternoon, when people are more tired. （2）{#blank#}2{#/blank#}

If you listen to Muzak carefully, you will probably recognize the names of many of the songs. Some musicians or songwriters don't want their songs to be used as Muzak, but others are happy when their songs are chosen. Why? （3）{#blank#}3{#/blank#}

Music is often played in public places because it is designed to make people feel less lonely when they are in an airport or a hotel. It has been proven that Muzak does what it is designed to do. Tired office workers suddenly have more energy when they hear the pleasant sound of Muzak in the background. （4）{#blank#}4{#/blank#}Supermarket shoppers buy 38 percent more groceries. （5）{#blank#}5{#/blank#}They say it's boring to hear the same songs all the time. But other people enjoy hearing Muzak in public places. They say it helps them relax and feel calm. One way or another, Muzak affects everyone. Some farmers even say their cows give more milk when they hear Muzak!

A. Some people don't like Muzak.

B. The music gives them extra energy.

C. Music is playing in the background.

D. Factory workers produce 13 percent more.

E. Muzak tends to help people understand music better.

F. They get as much as $4 million a year if their songs are used.

G. Muzak is played in most of the big supermarkets in the world.

　    All of us go through some difficult times as we approach teenage years. It's the age when we have to deal with the most 1in our life. This transition (过渡) from childhood to adulthood is 2 for some, but rough for others. The most important thing about being a teenager is 3.When we are teenagers, we would get blamed or even punished for anything wrongwe do.

       It's all not so 4 about being ateenager though. We don't have to have our 5 take us to somewhere wewant to go or we couldn't go before. We can have 6with friends oreven alone, which we couldn't have because we were too 7 to knowwhat pleasure is! It's a very enjoyable time of life. During this age, we areold enough to 8 what is good for us, and make decisions without 9others.

       But like the saying goes, “All good thingsmust come to an end, but all bad things can continue 10.” Duringthis period, we are having much 11 for our studies. If we don'tpass, we won't get jobs, and things will take a turn for the 12.With the present world economy in 13 ， we have to do really, really well in our 14 for a job. Adults saythat their 15 is the hardest part of life. But I think thetransition from a kid to an adult is much16than being already anadult. What we do in our teenage years will 17what we become and howwe lead our life in the future.

       In conclusion, it is quite 18 thatparents put much pressure on an already stressed on teenager. If they realizedthat, living condition for teenagers would be much better. 19 forthe teens ourselves we should get to know what is best for us. What's more, weshould understand the right 20 of life we choose at this age canmake us happy for the rest of our existence.