The third long March-5 rocket, China's largest carrier rocket was     1     (success) launched(发射) from Wenchang Space Launch Center in Hainan Province on Dec. 27, 2019. The rocket     2     (name) Long March-5 Y3. It left the ground from the launch center at 8:45 pm, carrying the Shijian-20 satellite, the     3     (heavy) and most modern communications satellite of China. About 2,220 seconds later, the satellite was sent into its     4     (plan) orbit（轨道）.

The Long March-5 rocket made its first flight on Nov.3, 2016 from Wenchang. However, the     5    (two) largest rocket, Long March-5 Y2, experienced a failure on July 2, 2017.     6     （compare）with Long March-5 Y2, the new rocket Long March-5 Y3 has shown more than 200 technological improvements.

Qu Yiguang, director of the Long March-5 Y3 research team, said, “Under great pressure, the research team has put all the efforts into the rocket over the past two years. We are very     7    (pride) that we can take part in the development of the Long March-5 rocket, which shows the highest level of China’s rocket technology.” After over two years of     8     (silent) in Wenchang, the Chinese welcomed the return of the “king” with excitement.

Since the Long March-1 sent China’s first satellite into space 50 years ago, the Long March series rockets     9     (complete) 323 flights. Over the past years, China’s rocket technology has been greatly improved. With the success of the Long March-5 Y3 rocket, China     10     (see) a busy year in space activities next year.

【推荐2】There is nothing more i    1     to life than the sun. W    2     the sun, all living things on the earth would die. The sun is a star. In the sky there are t    3     of stars like the sun. They are as large as the sun and as h    4     as the sun. At night you can see many stars, but in the day you can only see one star—the sun.

The sun is much n    5     to us than any other star. That is w    6     it looks the biggest and brightest of all the stars. The distance (距离) of the sun from the earth is as m    7     as 150,000,000 kilometers. Most stars are thousands of light-years a    8     from the earth.

Do you know what a light-year is? N    9     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    10    .