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    Lots of scientists believe there's life on other planets．Because of this，they keep doing research about the universe．They have sent astronauts to the moon．And they have {#blank#}1{#/blank#}the answer．There's no life on the moon．Not long ago they {#blank#}2{#/blank#}spaceships to Mars．There，they didn't find life．And they found the environment of Mars was {#blank#}3{#/blank#}from that of the earth．Then they knew it was{#blank#}4{#/blank#}for people to live on Mars．

    {#blank#}5{#/blank#}they haven't received a message from other planets，they believe their idea is right．Recently they have {#blank#}6{#/blank#}a planet．It's {#blank#}7{#/blank#}Proxima Centauri．It's very {#blank#}8{#/blank#}to our earth．It is just over four light years away．Proxima Centauri is {#blank#}9{#/blank#}than the earth．And there's water on this planet．That {#blank#}10{#/blank#}mean that life is possible there．Now scientists are studying this planet．Soon they will tell people the answer．

    Last night l went to a concert of Chinese folk music. One piece especially moved me. It {#blank#}1{#/blank#} (play) on the erhu. I felt sad and painful. The piece {#blank#}2{#/blank#} (name) Erquan Yingyue was one of {#blank#}3{#/blank#} (moving) pieces of music that I've ever heard. The erhu sounded {#blank#}4{#/blank#} sad that I almost cried along with it when I listened. Folk musician Abing {#blank#}5{#/blank#} (write) the music. He was born in Wuxi, {#blank#}6{#/blank#} August 17, 1893. He could play many musical instruments with his father's help. By age 17, he was known for {#blank#}7{#/blank#} (he) musical skills. Today, Abing's Erquan Yingyue is {#blank#}8{#/blank#} great piece. Many greatest erhu masters play {#blank#}9{#/blank#} praise it. It has become one of China's national {#blank#}10{#/blank#} (treasure).