1. (2020八下·深圳月考) 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当 的词或用括号中词语的正确形式填空。

The 84-year-old Zhong Nanshan is a great doctor and has given Chinese people confidence in winning this fight.

Zhong grew  in a family of doctors. His goal has always been to save as many lives as possible. In 2003,  SARS hit China, he volunteered to treat (治疗) patients and asked other doctors  (send) their most serious cases to him. After months of hard work, his treatment plan for SARS  (use) by China and then the whole world. It saved  (thousand) of lives.

Seventeen years later, Zhong is once again leading  expert team to deal with the novel coronavirus.  this new virus is known to be more dangerous to old people, Zhong worries little about his own  (safe).

On Jan 18, he took a high-speed train from Guangzhou to Wuhan. Two days later, he became the  (one) expert to tell the public that the virus can go from person to person. On Jan 29, he and his team spent over four hours online  (check) five patients. The next day, he chose a treatment plan for those patients.

People think of him as a soldier with courage and the backbone of our nation.