Reducing the amount of sleep affects students' performance at school. An American study asked schoolteachers to look at the effects of sleep restriction（限制） on children between six and twelve years of age. The teachers found that children who stayed up late had trouble thinking clearly and had more learning problems.

    {#blank#}1{#/blank#} Doctor Fallone now works at the Forest Institute of Professional Psychology in Springfield, Missouri. He presented the results last month at a science reporter conference in Washington, D. C. The Publication Sleep also reported the findings.

    The teachers were asked to complete weekly performance reports on seventy-four schoolchildren. The study lasted three weeks. During that period, Doctor Fallone and his team controlled the amount of sleep the children received.

    {#blank#}2{#/blank#} During another week, every child was kept awake later than normal. Each night, the youngest boys and girls had less than eight hours of sleep. The older ones were limited to six and a half hours. During the final week of the study, each child received no less than ten hours of sleep a night.

    The teachers were not told about how much sleep the students received. The study found that students who received eight hours or less had the most difficulty remembering old information. {#blank#}3{#/blank#}

    The study did not find that sleep restriction caused hyperactivity(极度活跃) in the children. {#blank#}4{#/blank#}

    Doctor Fall one said that the results provided experts and parents with a clear message: {#blank#}5{#/blank#}

How to Improve Eyesight Naturally

    Eyes are important for everybody. You must take care and try everything in your hand to keep them in good condition. Here are some of the tips to improve your eyesight naturally.

    {#blank#}1{#/blank#}

    Strain is known to be a factor in many health conditions and eyestrain is no exception. Try meditation, yoga or other methods of stress relief to improve your vision and overall health.

    Try palming.

    Sit upright in a comfortable chair.{#blank#}2{#/blank#} Cup your hands so that there is no pressure on your eyes. Let your fingers rest across your forehead. There should be no light entering your eyes. Palming should be done for a period of 5 to 10 minutes to start. Palming should be relaxing. It may help to do palming in a darkened room.

    Avoid sugar as much as possible.

    {#blank#}3{#/blank#} It will unpleasantly affect your eyesight, which affects the eyes by producing a larger amount of insulin (胰岛素) in the blood. Therefore you shouldn't be having much fruit juice or something that contains a lot of sugar.

    Exercise your eyes.

    The only exercise most eyes get is that daily rubbing we give them when we're tired or suffering from eyestrain. But eye exercises are actually good for your eyes and can improve your vision.{#blank#}4{#/blank#} Blink as fast as you can for a few seconds then close your eyes tightly, open and repeat. Do this exercise 3 to 4 times daily.

    Eat healthy.

    You probably hear that statement all the time but eating the right foods are necessary to good health.{#blank#}5{#/blank#} Foods that are high in fiber, vitamin C, D and beta carotene as well as other vitamins and minerals can help improve your vision. Here are a few foods that can be beneficial to good vision: carrots, eggs, blueberries, spinach, kale, grapes, and fresh garlic.

A. Reduce eyestrain.

B. Keep your eyes moist.

C. Sugar is your eyes's worst enemy.

D. Give your eyes a workout with the following exercise.

E. You may not be aware that your diet affects your vision but it does.

F. Close eyes and cover them with the palms of your hands.

G. Be sure to get plenty of sleep so your eyes don't strain to stay open during the day.

    Asthma(哮喘) is a long-lasting breathing disease that affects millions of Americans, many of whom are children. People who get asthma will suffer from lack of breath, difficulty in breathing or coughing--which are caused by the tightening of the muscles in airways. Untreated asthma can lead to poor lung function and death, but asthma can also be effectively controlled with proper treatments.

    Research is discovering genes that contribute to the development of asthma. This development has pointed researchers to the role of indoor and outdoor pollution as environmental factors that contribute to the increased occurrence of asthma.

    The Indoor Pollution

    Indoor pollution has increased with the developments in building materials and in heating and air conditioning systems. In addition to poisonous gases that come from paint, other materials like dust and perfumes used in household products such as washing powder are recycled continuously through the house, winter and summer.

    Unlike the days before central heating or before whole-house air conditioning, these materials and chemicals cannot get out of modern homes. Most often, they cause breathing problems in the members of the family with the least-developed autoimmune(自身免疫的) systems. Proper venting (通风) and use of environmentally-friendly building materials and carpeting can help reduce the presence of these chemicals.

    The Out door pollution

    Researchers have also established outdoor pollution's role as a probable cause of asthma. Asthma has been proven to result from some fuel products. Smog and the small matters carried by it have been recognized as a factor which leads to asthma since the 19th century when London saw more and more diseases in the industrial population. Industrial pollutants and other chemicals which are produced in water treatment and open treated water like that found in the swimming pools also contribute to increased cases of asthma as well as other illnesses.

    Those most affected by the increase of industrial and environmental pollution are children. Although much has been done to control the levels of pollution in the US, there still remains much to do as it is a worldwide phenomenon. Until an international effort can be made to limit carbon emissions, the occurrence of environmental asthma will probably continue to increase.

    Tests can be worrying even for the most prepared students. When some students take tests, their minds don't work as well as usual. They may experience something called test anxiety (焦虑), which can have a negative influence on their performance. Well, the following tips can help you pass your next test more easily and achieve more success!

    Get Enough Sleep

    6 hours of sleep or less can slow your mind and thus has negative effects on your performance on tests, even if you spend those missed hours of sleep studying. So, it's very important for you to get a good night of sleep before your big day.

    Study Smarter

    How do you study 'smarter'? Make a list of the things you need to learn in order of importance. That way, if you don't have enough time, you can still hit the items at the top of the list. Make a list of all the work you have to do, judge how much time each item will take, and compare that with the number of hours you have available; this will tell you whether you can read carefully or just skim, how much time you can spend checking papers, and tell you other ways to pace yourself so you can get everything done. If your time is still limited, it's important to learn to let go of being perfect.

    Visualize (想象) Success

    Before you fall asleep each night, it is a great way to visualize yourself taking the tests and doing wonderfully. Detailed visualizations can help you feel like you're really experiencing something，and visualizing yourself doing well is a way to 'practice' success in a way that can help you perform better and feel confident. Visualizations can also help you to remember the facts.

    Stay Calm

    Anxiety can harm your memory, so it's important to stay calm before and during tests. While that's easier said than done, there are several techniques that can help you calm down quickly whenever you feel nervous. For example, breathing exercise has been shown by research to reduce test anxiety, and can be very effective in helping you relax: just take deep breaths and let the anxiety come out.

    How to deal with your test anxiety

    Challenges are regular visitors in our life, and nobody is immune(不受影响)to them. {#blank#}1{#/blank#}However, we can use these challenges to make positive changes in our life. For instance：

    Develop your passion. {#blank#}2{#/blank#} When you are setting your goals, you always want to be passionate about those goals, because if you love what you do, you will be driven by the desire to achieve success.

    {#blank#}3{#/blank#}When you have doubts about yourself, you are doing damage to your progress. Therefore, you are supposed to see yourself as a winner, and trust yourself. Feeding your mind with positives will reinforce your beliefs and sweep any doubts out of your system.

    Track your progress. It is important that you take note of every improvement you make. {#blank#}4{#/blank#} Every step forward will give you a boost, and accelerate your efforts to the achievement of your ultimate goal.

    Learn how to control your emotions. It is important that you use your emotional intelligence when you encounter problems in your life. You are a product of your thoughts and feelings. Any negative emotions that show up can negate(否定)the positive forward movement you enjoyed earlier. So approach any challenge with a positive attitude.  {#blank#}5{#/blank#} Instead, strongly believe that you have all the tools you need in order to make positive changes in your life. It is in your hands to make the changes necessary and to take your life to new heights.

A. Practice makes perfect.

B. Consider confidence as a must for Success.

C. This will motivate you to work even harder.

D. They can make us lose hope and even give up.

E. Don't feel negative when you meet with difficulties.

F. There is nothing to be gained from delaying decisions and thoughts.

G. Having an enthusiasm for something will inspire you to achieve your goals.

Charles Darnay's story

a. He escaped with his family from Paris to London.

b. He returned to France to save his friend from being murdered.

c. He was cast into the Prison of La Force with 'In Secret' labeled.

d. He hated his cruel family, abandoning the family estates（房产）in France.

e. He loved, courted and married Lucie, whose father was mistreated cruelly by his uncle.

List the correct order of Charles Darnay's story. {#blank#}1{#/blank#}

What do you think of Charles Darnay according to the information above? {#blank#}2{#/blank#}