Plants are very {#blank#}1{#/blank#} (importance). This is {#blank#}2{#/blank#} plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. They can get their food by {#blank#}3{#/blank#}(eat) plants and animals. So animals and man need plants in order {#blank#}4{#/blank#}(live). This is why there are so many plants {#blank#}5{#/blank#} us. There {#blank#}6{#/blank#} (be) two kinds of plants: flowering plants(开花植物) and non-flowering plants(不开花植物). Almost all the trees around us are flowering plants. We can know some trees from their flowers {#blank#}7{#/blank#} fruits. Non-flowering plants do not grow flowers. We cannot see many non flowering plants around us. If we look {#blank#}8{#/blank#}(careful) at the plants around us, we {#blank#}9{#/blank#} (find) that there are many kinds of plants. Some plants are large and some are small. Most of {#blank#}10{#/blank#} (they) are green.

    "Dreams may be more important than sleep. We all need {#blank#}1{#/blank#} （dream）," some scientists say. Dream take up about one quarter of our {#blank#}2{#/blank#} （sleep）time. People have several dreams each night. Dreams are like short movies. They are usually {#blank#}3{#/blank#} colour. Some dreams arc like old movies. They come to us over and over again. That may be because the dreamer is {#blank#}4{#/blank#} （worry）about something. Dreaming may try to find {#blank#}5{#/blank#} answer.

    Some people get new ideas about their work from dreams. They may think {#blank#}6{#/blank#} their work all day. These ideas can carry over into dreams.

    Sometimes we wake up with a good {#blank#}7{#/blank#} （feel）from a dream. But often we can't {#blank#}8{#/blank#} （remember）the dream. The dreams can go away {#blank#}9{#/blank#} （quick）from memory.

    Too much dreaming can be harmful. The more we sleep, the {#blank#}10{#/blank#} （long）we dream. The mind is hard at working when we dream. That's why we may have a long sleep and still wake up tired.