2．科普知识 What a fine day! The sun 1 and everything 2 bright. Can you felt 3 when you stand in the sun? The sun gives heat from far away. It is about one hundred and fifty million kilometers 4 . The sun looks small because it is far from us, but 5 it’s very huge. The earth moves around the sun. It 6 one year from the earth to go around the sun. And at the same time the earth 7 is spinning around once every twenty-four hours. The sun gives us light. It keeps us 8 . It makes thing 9 . Plants, animals and people need the sun. We can’t live 10 the sun. 【查看更多】
