Carver studied peanuts.He knew that the south couldn't grow just cotton. Planting cotton year after year wore out the soil and made it useless.Carver learned that if farmers planted cotton one year and peanuts the next,the soil{#blank#}1{#/blank#}healthy.

    To encourage this practice,Carver thought of new uses for the peanut.Would you like to try peanut and raisin ice cream? How about using peanuts as a kind of{#blank#}2{#/blank#} to make shampoo? Perhaps you would prefer to make paint from peanuts,or maybe you would like to bake with peanut flour.Glue? Paper? Rubber? The list goes on and on.He also thought of{#blank#}3{#/blank#}uses for pecans (山核桃）and other nuts.

    Carver{#blank#}4{#/blank#}little from most of his inventions.He didn't feel that it was right to sell his ideas. He gave them freely to help farmers and fellow scientists.Carver's life is one that we could all use as an example.

    Couplets (联) have been around for about 600 years. It {#blank#}1{#/blank#} in the Ming Dynasty. People {#blank#}2{#/blank#} red paper instead of peachwood charms to {#blank#}3{#/blank#} the Spring Festival couplets. After the Qing Dynasty, the couplets were once {#blank#}4{#/blank#} popular. Lots of famous couplets appeared. With the development (发展) of the international cultural exchange, the couplets were also {#blank#}5{#/blank#} to Vietnam, Korea, Japan, Singapore and other {#blank#}6{#/blank#}. The customs of sticking these couplets still {#blank#}7{#/blank#} now.

    Couplets are usually in different {#blank#}8{#/blank#} and colors. Nice words and sentences are {#blank#}9{#/blank#} on the couplets. Different couplets are put on doors, walls or windows as symbols of wishes for good {#blank#}10{#/blank#} and a happy new year.