My mother was a cleaner in our school canteen(食堂) when I was in the middle school. At that time she was such an embarrassment(难堪) to me not only because of her job but also her look. She had only one eye. Every time I saw her in my school, I pretended(假装) not to see her and ran away.

 After graduating, I got a good job in another city. Then I got married and had two kids. I told my family that my parents had been dead, so they never saw my mother, even her photo. But one year later, I got a letter, it read:

 My dear son Jeff,

    I'm sorry to disturb(打扰) you, but I really miss you all the time. I'm afraid that I will have no chance to see you again.

    I'm sorry that I was always an embarrassment to you when you were growing up. However, I had no choice. When you were very young, you got into an accident and lost your eye. As a mother, I couldn't stand that you would have to grow up with one eye. So I ……

    I was proud of my son who was enjoying his beautiful world for me with that eye.

    With all my love to you!

                                                              Mom

 After reading the letter, I couldn't help crying.

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    Many families make some house rules to make sure that everyone has a safe and happy home environment when they're home alone. Different families have different rules，but here are some rules many families follow：

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    Keep your house keys hidden inside a pocket.

    Don't lend your keys to others.

    Hiding a key under a rock or a flowerpot isn't a good idea.

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    Don't open the door to anyone except a sibling（兄弟姐妹）or parent.

    Keep all doors locked at all times.

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    Most families have a rule that no friends are allowed in the house when someone's at home alone. This may be no fun but in the end，it is safer for everyone.

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    Your parents may want you to stay at home and go nowhere-not even a friend's house，the park，or the store.

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    Many parents ask their kids to wait until a parent is home before going online.

    These may sound pretty strict，but you'll be surprised how they help you feel safe！

    Flowers have habits or ways of doing things, just as people have. Would you like to hear about some of these?

    There is one habit that almost all flowers have. They turn to the light. If plants are kept in a room, the flowers turn to the window. Some flowers shut up at night. It seems that they go to sleep. They open again in the morning. Tulips（郁金香）do this.

    One morning Lingling was looking at some tulips. When one of them opened, a bee flew out. He stayed too late last night, and so was shut up in the flower. He might be hard at work all day getting honey. He stopped to rest in the tulip, and was shut in when it closed. He had a fine bed that night. Lingling wondered if he slept any better than he would have slept in the hive（蜂巢）!

    A large numbers of emojis (表情符号) are sent online every day. Emojis are pictures used in texts and web pages. Since emojis were invented in the late 1990s, they have been used as a modern international languages.

    We like emojis for different reasons. A written message is always black and white, but emojis show meanings beautifully. Sometimes emojis also change the way we write. The more emojis we use, the fewer words we use.

    There are many emojis with different meanings. They are easy to understand. For example, a smiling face means "I'm happy". A cake with candles means "Happy birthday". When we want to say "Goodbye", we use a smiling face with a waving hand. When we are in a terrible situation but we have to laugh to cheer ourselves up, we can use a "cry laugh" emoji.

    Now emojis have great influence on us. Sometimes, emojis can be helpful to people from different countries in understanding each other. And when we are feeling exchange. Then the invention of emojis helps change the situation. For example, when we receive a smiling face from our friends online, we try to exchange our feelings by sending the same picture.

    It seems that emojis change as time goes by. However, we should be careful when we use them online.