Question

根据短文内容及首字母提示, 补全空格内单词, 使短文完整、通顾。

There is nothing more i1. to life than the sun. W2. the sun, all living things on the earth would die. The sun is a star. In the sky there are t3. 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 d4. you can only see one star—the sun.

The sun is much n5. to us than the other stars. That is w6. it looks the biggest and brightest of all the stars. The distance (距离) of the sun from the earth is as m7. as 150, 000, 000 kilometers. Most stars are thousands of light-years a8. from the earth.

Do you know what a light-year is? N9. 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 y10..

Answer 1