Exam time is the most stressful period of the year. You have worked all school term on your classes and now it's the time to prove what you have learned. With so much at stake (处于成败关头), it is easy to get stressed about your exams. However, with the right amount of hard work and focus you can pass your tests easily.

    When I was in school, I used to get very stressed over my exams. So did my friends. Some people stopped eating and others ate too much! Some gave up and others burned themselves out! The most important thing to remember when studying is not to feel frightened! Take the middle path -- stay calm, eat healthy and get a rest. Pushing yourself too hard is just as dangerous as not studying enough. A tired, overworked brain is just as useless as a lazy, empty one!

    So, what should you do ?Arrange a time each day for study and a time for relaxation .You may have less time to relax than usual, but you still need to let your brain rest for a few moments. Get plenty of sleep .If you are tired, information will not stick in our memory. Finally eat healthy foods that fuel （给……加油）your body and mind.

    It is bad to think too much about your exams. Some students may think that the rest of their life depends on them .That's not true. Instead, just view the exams as another difficulty you will overcome. You have overcome all kinds of difficulties in you life so far. With the right amount of work and focus, you will pass your exams with flying colours! High school is right around the corner!

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    A very important world problem is the growth of population on the earth. The population of the world today is more than 6,500,000,000. That is a great number and we know it quite well. ①The important thing is not how large the population of the world is now, but is the rate(速度) of the growth. It is about 1.63% every year after the number of dead people has been taken away.

    To give you some ideas of the birth rate, look at the ②second hand of your watch. Every second, four babies are born in the world. Another baby! Another baby! Another baby! Another baby! ③You can not speak quickly enough to keep up with the rate of the growth of the population. It is growing faster and faster. So it goes on, hour after hour. In one day, people have to find food for about 350,000 mouths more.

    This great growth of population will make a big problem by the year 2050 — there will be as many as 7,500,000,000 people on the earth! So this is one of the biggest problems that you are going to meet in your life.

    This is a train timetable. If you want to go to Shenyang, you should take Train {#blank#}1{#/blank#}. You have to spend {#blank#}2{#/blank#} hours on the train if you go to Shenyang from Beijing. If you want to go to Taiyuan from Chengdu, you can take the T8 train. The T8 train arrives in Taiyuan at {#blank#}3{#/blank#}.The Train T7 will take you to {#blank#}4{#/blank#} from 22:46 to 20:50. If you want to go to Beijing from Tianjin, you can take Train {#blank#}5{#/blank#}. It will take you 33 minutes.

    Everyone has good days and bad days.

    Sometimes, you may feel that you're on top of the world and all the questions on your maths test might seem cays. But sometimes you feel frightened or you lose things, and you cannot focus on your school work.

    For more than 20 years, scientists have suggested that high self-esteem(自尊)is the key to success. They said that kids who feel good about themselves do better in school and have fewer emotional problems than kids who have a low opinion of themselves. , Now, new research shows that focusing just on building self-esteem may not be helpful. In some cases, having high self-esteem can bring bad results if it makes you less likeable(可爱的)or more upset when you fail at something.

    "Forget about self-esteem," says Jennifer Crocker, a psychologist at the University of Michigan, US." It's not the important thing. Crocker's advice may sound a bit strange because it is good to feel good about oneself. Studies show that people with high self-esteem are less likely to be sad, anxious, shy, or lonely than those with low self-esteem.

    But, after reviewing about 18, 000 studies on self-esteem, Roy Laumeister, a psychologist at Florida State University, has found that building up your self-esteem will not necessarily make you a better person. People with high self-esteem tend to think more of themselves while people with low self-esteem are more likely to rely on their friends when they need help.

    Researchers say it is best to listen to and support other people. Set out to create or build something. If you fail at something, try to learn from the experience. "The host therapy(药方)is to know your own weak points, "Vohs says. "It's OK to say, I'm not so good at that, 'and then move on."