Thomas Edison lit up the world with his invention of the electric light. Without him, the world might still be in the dark. However, the electric light was not his only invention. He also invented the motion picture camera and 1,200 other things. About every two weeks he created something new.

    Thomas Edison was born in 1847. He attended school for only three months. His mother taught him at home, but Thomas was mostly self-educated. He started experimenting at a young age.

    When he was 12 years old, he got his first job. He be- came a newsboy on a train. He did experiments on the train in his spare time. Unluckily, his first work experience did not end well. They fired him when he accidentally set fire to the floor of the train. Then Edison worked for five years as a telegraph operator , but he continued to spend much of his time in experimenting his first patent(专利权) in 1868 for a vote recorder run by electricity.

    Thomas Edison was totally deaf in one ear and hard of hearing in the other, but he thought of his deafness as a blessing in many ways. It kept conversations short, so that he could have more time for work. He always worked 16 out of every 24 hours. Sometimes his wife had to remind him to sleep and eat.

    Thomas Edison died at the age of 84.He left a great many inventions that greatly improved the quality of life all over the world.

    Spam(垃圾邮件) is a factof Internet life. Some of it carries bad things, but the main problem with spamis that it is unpleasant because it fills your mail box with pointless messages.

    Most email programmes have built-in filters(过滤器) that will discover unwanted messages and put them into a, junkfolder(垃圾文件夹). You can make the filter learn what you considerto be spam or block certain senders.

    Avoid letting your email address appear onwebsites spammers search the Internet for email addresses. Be careful who yougive your email address to, and if you need to send out several copies of anemail, use blind copy instead to cover the other people s addresses.

    Delete(删除) spam emailswithout opening them. Signs of possible spam are bad spelling in email headers,strange sender addresses, or emails sent at unusual hours. If you do open aspam mail, never reply to it or click on any pictures it may have.

    If you receive an unexpected email pretending(伪装) to come from your bank, credit card company or other sup- pliers, bevery careful. If the email asks you to reply, don't do it! Instead, call up theseplaces or visit their websites.

    Consider setting up a second email address andkeep one address for your personal use and another for your onlinecommunication.

    Have you had a headache during a test? Have you ever been so worried about something that you have a headache or even can't sleep at night? If so, then you know what stress is. . This worry in your mind can make your body feel bad. You may feel angry, sad, scared, or afraid--all of which can give you a stomachache or a headache.

    However, there are different kinds of stress. . Good stress might happen when you re called to answer questions in class or when you have; to give a speech no . For example, you may do a better job on your test if the stress pushes you to prepare better before the test.

    On the other hand, bad stress can happen if the stress lasts too long. You may not feel well if your parents are fighting, if a family member is sick, if you're having problems at school, or if anything else makes you unhappy every day. That kind of stress isn't going to help you. .

    The best way to fight the stress is to have a balanced life. . If you get enough sleep and eat properly, and if you exercise and leave time for fun, you'll probably feel less stressed.

— But nobody knows if it ________________ tomorrow.