I used to go ____ with my mum on clear nights and look at the sky. It looked like black velvet with a million ____ on it. In different seasons, we saw different groups of stars. Sometimes we saw stars ____ brightly ____ the sky. How beautiful they were!

    Studying the stars was great ____ for me. Once I learnt a little about them, I soon wanted to find out more and more. Now it is my ____. I host a TV program ____ The Sky at Night. I use my knowledge to tell people about the stars in a ____ way. I am proud of my TV program me—it has ____ for more than 50 years!

“17世纪的英国在历史性的转变中抢占了先机，已经率先到达现代文明的入口处，在下两个世纪里，它将傲视全球。”英国得以“傲视全球”的主要原因是（    ）

500毫米____5分米