On Sept.29^th，2021，85-year-old Liu Yongtan， （1）

devoted

devoted

（devote） to the research of radar technology，was awarded the title Role Model of the Times by the Publicity Department of the Communist Party of China Central Committee in （2）

recognition

recognition

（recognise） of his achievements.
    A professor at the Harbin Institute of Technology（HIT） in Heilongjiang province，Liu is known as （3）

an

an

expert in radar and signal processing technologies，and the originator of China's new radar systems for navigation（航海） and defense.
    Born in Nanjing，Jiangsu province，in 1936，Liu suffered a painful childhood due to the War of Resistance Against Japanese Aggression （1931-45）.His parents named him Yongtan，to express their wish （4）

for

for

a peaceful nation.
    With a great sense of （5）

national

national

（nation） duty，Liu was admitted to the electrical engineering department at HIT in 1953.Because of his excellent academic performance，in his third year in college，he （6）

was selected

was selected

（select） to study radio technology at Tsinghua University，which revolutionized （革新） humanity's technological blueprint，way of life and the way war was practised in the（7）

twentieth

twentieth

（twenty） century.In 1978，Liu went to the United Kingdom， （8）

where

where

he started his study of radar technology and received new insights into the field. "At that time，other countries had already begun to develop new radar systems，raising in me a （9）

burning

burning

（burn） desire to help my country build a modernized radar system，which was （10）

badly

badly

（bad） needed for both national defense and commercial activities."