The Beijing 2022 Winter Olympics got the world's attention.There were different kinds （1）

of

of

competitions，and athletes had a wonderful journey，too.
   While people were cheering the athletes on，they were also（2）

surprised

surprised

（surprise） at the behind-the-scene teamwork.They could see a group of people working hard during the Winter Olympics.（3）

Who

Who

were they？
   They were the cleaning staff （工作人員） on the U-shaped ice rink （溜冰場(chǎng)） .They appeared after each game and moved here（4）

and

and

there to clean up the ice rink.
   They were the food providers who checked the food （5）

carefully

carefully

（careful） at 3 a.m.jye.ai day，and did their best to make sure that food was（6）

safe

safe

/se?f/.
   They were the signal technicians （技術(shù)員）.At night，the temperature of the snow sports site was close to -30°C．In order to（7）

prevent

prevent

/pr??vent/ the cameras from freezing （結(jié)冰），the staff covered the cameras with special materials to keep（8）

them

them

（they） warm.
   They were the medical staff.Hand soaps （肥皂） were put in（9）

public

public

/?p?bl?k/ areas.Scientific and technological COVID-19 prevention actions were developed，and medical （10）

robots

robots

（robot） walked through different areas to offer help.
   Thanks to these behind-the-scene staff，the Beijing 2022 Winter Olympics became successful.