根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

      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. {#blank#}1{#/blank#}  Code breaking never lags(落后) far behind code making. The science of creating and reading coded messages is called cryptography.

     There are threemain types of cryptography. {#blank#}2{#/blank#}  For example, the first letters of “My elephant eats too many eels” Spell out the hidden message “Meet me.”

{#blank#}3{#/blank#} 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. {#blank#}4{#/blank#} For example “bridge“ might stand for “meet” and “out” might stand for “me.” The message “bridge out” would actually mean “Meet me.” {#blank#}5{#/blank#}  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.

The Winner's Guide to Success

    Do you know what makes people successful? To find out the answers, an American scholar recently visited some of the most successful people around the world. {#blank#}1{#/blank#}

    Be responsible for yourself

    Sometimes you may want to blame others for your failure to get ahead. In fact, when you say someone or something outside of yourself is stopping you from making success, you're giving away your own power. {#blank#}2{#/blank#}

    Write a plan

    It is very difficult to try to get what you want without a good plan. It is just like trying to drive through strange roads to a city far away.{#blank#}3{#/blank#} Without this "map", you may waste your time, money and also your energy; while with the "map" you'll enjoy the "trip" and get what you want in the shortest possible time.

    Be willing to pay the price

    {#blank#}4{#/blank#} So you must be ready to work hard — even harder than you have ever done. If you are not willing to pay the price, you won't get anything valuable.

    {#blank#}5{#/blank#}     

    It seems to us that everyone knows this. But it is easier said than done. When you are doing something, you must tell yourself again and again: Giving up is worse than failure because failure can be the mother of success, but giving up means the death of hope.

A. Never give up.

B. Nothing is easy to get.

C. A good plan is like a map to you.

D. Here are some keys to success that they give.

E. Some people achieve success much later in life.

F. You're saying, "You have more control over my life than I do."

G. Someone else's opinion of you doesn't have to become your reality.

    Hobbies let you explore interests outside your work. {#blank#}1{#/blank#} There are plenty of options available to you. How can you choose the hobby that suits you from these options? Here are some tips.

    Look at what interests you. And examine what takes up your spare time, when you have it. Do you enjoy reading books? Maybe you want to try your hand at writing them. Do you like a cool beer at the end of the day? Maybe your hobby could be trying to make beer at home. {#blank#}2{#/blank#}

    Think about what you value most. What qualities do you think important? Do you value wisdom or courage? Do you admire artistic expression? {#blank#}3{#/blank#} For instance, maybe you could volunteer at a library as a hobby because you value education, or maybe you could take up painting because you admire people who can express themselves with art.

    {#blank#}4{#/blank#} Certain hobbies require certain skill sets. If you don't have much patience, then maybe hand sewing isn't something you'd enjoy. However, if you love building things, maybe you should consider a hobby like building furniture.

    {#blank#}5{#/blank#}Ask your friends and family what you seem to talk about the most. Now, think about what it is about that subject that you enjoy so much and determine how it can be turned into a hobby.

A. Help others to choose a hobby.

B. Examine your skills and personality.

C. Turn what you already love into a hobby.

D. Decide whether you're interested in one thing.

E. Think about the topics you go on endlessly about.

F. They let you be creative and try all kinds of new things.

G. Let those qualities guide you when you're choosing a hobby.

How to write an email?

    While many people are accessible by email, sometimes it is difficult to determine how exactly to write an email to them. Here are some tips for you to follow.

Write an appropriate subject line. The subject line should tell the recipient (接收者) immediately what the email is about. {#blank#}1{#/blank#}Remember that your wording also has to be brief.

    {#blank#}2{#/blank#} It is best to be more formal rather than informal, so when writing to someone you have never met or written to before, a “Dear Jane Smith” is appropriate. When addressing someone whom you are a little familiar with, a “Dr. Smith” is okay until they tell you to address them by their first name, in which case a simple “Jane” will be okay.

    {#blank#}3{#/blank#} Within the first two sentences of your email, your recipient should know exactly why you are writing to him. Sometimes an introduction may have to precede (先于) the sentence that states why you are writing, and sometimes it has to follow.

    Use appropriate language. You may be used to using informal language in certain social settings. {#blank#}4{#/blank#}Even when dealing with colleagues or friends you are familiar with, do not immediately fall back on informal language.

    Keep it simple. People may get dozens and even hundreds of emails a day.{#blank#}5{#/blank#}In that way, they can save much of their time when reading emails.

A. Use proper greetings.

B. Express your ideas clearly.

C. State your purpose at the beginning.

D. Be as specific as possible when writing the subject.

E. However, an email may not be the best place to use such language.

F. It is important to check the language to avoid spelling and grammar mistakes.

G. It is always easier for them if you keep your email as short and brief as possible.

    If something that you're doing doesn't challenge you, then it doesn't change you. We all need some normal stress in our lives, after all.{#blank#}1{#/blank#} So challenge the following limits:

    ⒈Figure out what you're scared of and do it continuously.

    If you're a salesman, and you're scared of talking to people personally or over the phone now, instead of being scared and thinking you'll fail, spend at least five minutes a day to pick up the phone and make a call. {#blank#}2{#/blank#} But don't stop on the first try! Eventually, you can look at fear in the eye and say, “Go on. I'm not scared!”

    ⒉{#blank#}3{#/blank#}

    Make sure this hobby is not linked to your career; you have to relax and relieve your stress while performing this. Some examples might be cooking, sewing, painting and so on. Apart from helping you challenge yourself, taking a class for your hobby may also give you extra income.

    ⒊Set aside at least nine minutes a day for physical exercise.

    {#blank#}4{#/blank#} A simple 9-minute run around your neighborhood can do wonders for yourself. Exercise can not only help you maintain your regular weight, but also make you feel better about yourself.

    ⒋Travel and allow yourself to be interested in new people.

Don't just limit yourself to your fellow travelers—-try to connect with the service staff. You never know what kind of people they're going to be. Get out of your house or go online right now to book your class. {#blank#}5{#/blank#}

A. You should do it continuously.

B. Someone may hang up on you.

C. You don't need to go to the gym.

D. Running in the gym may be a better choice.

E. Start to travel now and learn to challenge yourself.

F. Take a class for a hobby you've been wanting to develop.

G. You can never see any improvement if you stick to your comfort zone.

    Imagine a child standing on a diving board four feet high and asking himself the question:“Should I jump? This is what motivation or the lack of it can do. Motivation and goal setting are the two sides of same coin. {#blank#}1{#/blank#}Like the child on  the  diving  board, you will stay undecided.

    {#blank#}2{#/blank#} More than that, how should you stay motivated to achieve the goal? First, you need to evaluate yourself , your values your strengths, your weaknesses, your achievements, your desires ,etc. Only then should your you're your goals

    You also need to judge the quality and depth of your motivation. This is quite important, because it is directly related to your commitment. There are times when your heart is not in your work. {#blank#}3{#/blank#} So, slow down and think what you really want to do at that moment. Clarity（清晰）of thoughts can help you move forward.

    Another way of setting realistic goals is to analyze your short and long term objectives, keeping in mind your beliefs, values and strengths. Remember that goals are flexible.{#blank#}4{#/blank#} They also need to be measurable. You must keep these points in mind while setting your goals.

    Your personal circumstances are equally important. For example, you may want to be a Pilot but can't become one because your eyesight is not good enough.{#blank#}5{#/blank#}You should reassess your goals, and motivate yourself to set a fresh goal.

    You will surely need to overcome some difficulties, some planned, but most unplanned. You cannot overcome them without ample motivation. Make sure that you plan for these difficulties at the time of setting your goals.

A. This can affect your work.
B. So how should you motivate yourself?

C. However, this should not discourage you.
D. So why should we try to set specific goals?
E. They can change according to circumstances.
F. Motivation is what you need most to do a good job.

G. Without motivation you can neither set a goal nor reach it