Sleep and dreams have interested people for centuries. Scientists are learning more about sleep, but they still know very little about why we dream.

    {#blank#}1{#/blank#} First, we have most of our dreams during REM (rapid eye movement) sleep. At this time, the brain is very active. Second, everyone dreams, even if we can't remember doing so when we awake. {#blank#}2{#/blank#} While we are asleep, it works more slowly and sometimes puts our thoughts and memories together in strange ways.

{#blank#}3{#/blank#} Some believe that our dreams are relevant to thoughts and feelings that we experience while we are awake. Many dreams researchers think that a dream about death, for example, is really about an important life change. {#blank#}4{#/blank#} A dream about teeth—especially broken or loose ones-may suggest stress or fear. Dreams in which you are flying often represent freedom or escape.

   Researchers think people in our dreams can tell us something about ourselves. If the person in the dream was yelling, for example, maybe you are angry. {#blank#}5{#/blank#}

There is still a lot about dreaming that we do not understand. By learning more about our dreams, we may learn more about ourselves.

    A. Dreams may be more important than sleep.

    B. Scientists do not know for certain why we dream.

    C. If he or she was scared then maybe you are terrified of something.

    D. Modern research can tell us some important things about dreams.

    E. There are three things you should pay attention to have a sweet dream.

    F. Finally, a part of our brain helps us to understand daily experience we have.

    G. Dreams about telephones are thought to be about giving or receiving messages.

    Maybe you are an average student. {#blank#}1{#/blank#} This is not necessarily so, however. Anyone can become a better student if he or she wants to. Here's how.

    Plan your time carefully. When planning your work, you should make a list of things that you have to do. After making this list, you should make a schedule of your time. First your time for eating, sleeping, dressing, etc. Then decide a good, regular time for studying. {#blank#}2{#/blank#} A weekly schedule may not solve all your problems, but it will force you to realize what is happening to your time.

    Make good use of your time in class. {#blank#}3{#/blank#} Listening carefully in class means less work later. Taking notes will help you remember what the teacher says.

    Study regularly. When you get home from school, go over your notes; look at the important points that your teacher is going to discuss the next day, read that material. {#blank#}4{#/blank#} If you do these things regularly, the material will become more meaningful, and you'll remember it longer.

    Develop a good attitude towards tests. The purpose of a test is to show what you have learned about a subject. They help you remember your new knowledge. The world won't end if you don't pass a test, so don't be over worried.

    {#blank#}5{#/blank#} You will probably discover them after you have tried these.

    More than loo genes are related with increased risk of developing schizophrenia（精神分裂症）,bipolar disorder （躁郁症）and alcoholism（酗酒）,confirms a large study published in the recent issue of the British scientific journal Nature.

    The world's largest study into the genetic basis of mental illnesses was led by researchers from British universities,including University College London (UCL),Cardiff University and King's College London (KCL).

    Researchers believe that they are now much closer than before to understanding the complex biological causes, which make some people being at high risk of developing mental illnesses.They also believe that these findings could lead to new treatments.

    The researchers analyzed the DNA of about 37,000 patients with schizophrenia,bipolar disorder or alcoholism, and compared the smallest genetic changes to those found in about 113,000 healthy people.They then identified about 128 independent genetic variants（变体）at 108 locations on the human chromosomes（染色体）that contribute significantly to developing schizophrenia—83 of these sites have never before been linked to the illness,according to scientists.

    For example,people with the variant of the GRM3 gene,thought to be important in brain signaling,are around 2 to 3 times more likely to develop schizophrenia or alcohol dependence.The variant,which is found in approximately one in every 200 people,is also associated with a three times risk of developing bipolar disorder.

    "We could be looking at the next big drug target for treating mental illness,"Professor David Curtis from UCL, co-author of the paper,said."The work opens up new ways to prevent and treat mental illnesses by revealing the mechanisms involved in their development."

    What should you think about when trying to find your career? You are probably better at some school subjects than others. These may show strengths that you can use in your work. A boy who is good at mathematics can use that in an engineering career. A girl who spells well and likes English may be good at office work. So it is important to know the subjects you do well in at school. On the other hand, you may not have any especially strong subjects but your records show a general satisfactory standard. Although not all subjects can be used directly in a job, they may have indirect value. A knowledge of history is not required for most jobs but if history is one of your good subjects you will have learned to remember facts and details. This is an ability that can be useful in many jobs.

    Your school may have taught you skills, such as typing or technical drawing, which you can use in your work. You may be good at metalwork or cookery and look for a job where you can improve these skills. If you have had a part-time job on Saturdays or in the summer, think what you gained from it. If nothing else, you may have learned how to get to work on time, to follow instructions and to get on with older workers. You may have learned to give correct change in a shop, for example. Just as important, you may become interested in a particular industry or career you see from the inside in a part-time job.

    Facing your weak points is also part of knowing yourself. You may be all thumbs when you handle tools; perhaps you are a poor speller or cannot add up a column of figures. It is better to face any weakness than to pretend they do not exist. Your school record, for instance, may not be too good, yet it is an important part of your background. You should not be apologetic about it but instead recognize that you will have a chance of a fresh start at work.

    Unit the 1980s, scientists were trained to ignore animal pain, according to the belief that the ability to feel pain was associated only with higher consciousness. However, today, scientists view humans as a species of animals, and largely accept that many species are capable of some level of self-awareness. {#blank#}1{#/blank#}

    If you hit another person in the face, you can estimate their pain level by what they do or say in response. {#blank#}2{#/blank#} Gradually, scientists have developed a set of indicators of pain response in non-human animals. Demonstrating a response to a negative stimulation and displaying protective behavior of injured areas are two major signs.

    {#blank#}3{#/blank#} Some researchers argue lobsters (龙虾) are too dissimilar to vertebrates (脊椎动物) to feel pain. Nonetheless, lobsters do satisfy all of the standards for a pain response. Lobsters guard their injuries, and learn to avoid dangerous situations. They are even believed to possess some level of consciousness. In result, today most scientists agree that injuring a lobster causes physical pain.

    Due to growing evidence that the lobsters may feel pain, it is now illegal to boil lobsters alive or keep them on ice in some countries. Even in locations where boiling lobsters remains legal, many restaurants prefer more humane methods. {#blank#}4{#/blank#} To satisfy picky diners, more restaurants rule out the cruel cooking methods.

    Currently, the most humane tool for cooking a lobster is the CrustaStun. This device electrocutes (电击) a lobster. {#blank#}5{#/blank#} The following process of cooking is sure to cause no pain. In contrast, it takes about 2 minutes for a lobster to die from boiling water during which time pain lasts.

A. But huge disagreement exists.

B. The creature instantly loses consciousness in half a second.

C. It beats the former method by saving chefs' effort in cleaning the creature.

D. It's difficult to assess pain in other species because we cannot communicate as easily.

E. People are coming to realize that other species might also enjoy the luxury of emotion.

F. Except for moral consideration, many chefs believe stress negatively affects the flavor (味道) of the meat.

G. Legal prohibition becomes the major consideration for restaurants when choosing a cooking method.

    The best way to set yourself up for success is to make sure that your goals are SMART: specific, measurable, attainable, relevant, and timely.

    Make your goals specific.

    You need to give yourself a concrete goal so you know exactly what you're working toward. {#blank#}1{#/blank#} Who will be involved in helping you reach your goal? What exact goal do you want to accomplish? Be very specific. When will you start and when will you reach your goal?

    Make your goals measurable.

    Now that you have some of the specifics of your goal nailed down, it's time to look at how you will measure your progress. After all, if you don't have any way to measure your goal, how will you know when you've reached it? {#blank#}2{#/blank#} Some examples of measurable goals might be pounds lost, a positive change in blood work numbers, or fitness minutes accumulated.

    Make your goals attainable.

    It's good to think big. {#blank#}3{#/blank#} A goal that's attainable for you is one that you believe you can reach and have all the support, equipment, knowledge and resources needed to put your goals into action.

    Make your goals relevant.

    You need to make sure that you're choosing a goal that fits you and your lifestyle. {#blank#}4{#/blank#} Pick something that is meaningful and relevant to you and you'll set yourself up for success.

    Make your goals timely.

    {#blank#}5{#/blank#} Otherwise, it will be difficult to know how to pace yourself to reach it. Every goal should have a date, which will help you stay on track. In addition, set up a few mini-deadlines to keep you on track to reaching your big-picture goal.