阅读短文，根据首字母提示填写单词。 There is nothing more i{#blank#}1{#/blank#} to life than the sun. W{#blank#}2{#/blank#} the sun, all living things on the earth would die. The sun is a star. In the sky there are t{#blank#}3{#/blank#} of stars like the sun. They are as large as the sun and as hot as the sun. At night you can see many stars, but in the day you can o{#blank#}4{#/blank#} see one star-- the sun.
The sun is much n{#blank#}5{#/blank#} to us than any other star. That is w{#blank#}6{#/blank#} it looks the biggest and brightest of all the stars. The distance (距离) of the sun from the earth is as m{#blank#}7{#/blank#} as 150,000,000 kilometers. Most stars are thousands of light-years a{#blank#}8{#/blank#}from the earth.
Do you know what a light-year is? N{#blank#}9{#/blank#} in the world travels faster than light. It travels 300,000 kilometers per second. And one light-year is the distance that light can travel in one y{#blank#}10{#/blank#}.
