Goldilocks was tired. She saw three chairs in different {#blank#}1{#/blank#}: big, middle and small. After she tried {#blank#}2{#/blank#}, she sat on the small one. But it was broken(坏了) because Goldilocks was very heavy.

    Then, Goldilocks {#blank#}3{#/blank#} into the bedroom. There {#blank#}4{#/blank#} three beds. She chose the small one and slept in it.

    When Baby Bear saw his empty (空的) {#blank#}5{#/blank#} and broken chair, he cried. He found Goldilocks in his bed and {#blank#}6{#/blank#}, "There's the bad girl!" It woke up(唤醒) Goldilocks. She jumped up and ran away.

    Make sure that the keyboard and the screen are in the right height for you. If they are not, you will get a backache.

    Make sure the screen is in the correct{#blank#}1{#/blank#}from your eyes. If you wear glasses, make sure these glasses are suitable for using the computer. Some people use a{#blank#}2{#/blank#}pair of glasses when they use a computer.

    Keep your screen clean and do not have it too bright. A dirty screen can hurt your eyes. A very bright screen can also be bad for your eyes. If you can{#blank#}3{#/blank#}one, buy a computer screen. It will be better for you than using the screen of a TV set.

    When you use any software, you must{#blank#}4{#/blank#}because some software can cause viruses in the computer. If your computer has viruses, it won't work or might even break down.