Experts like Zhong Nanshan have played a(n)（ ）（ ）role in containing the spread of COVID-19.
A.significant B.self-esteem C.critical D.cooperate E.volunteer F.beneficial G.effective H.contribution正确答案A
Experts like Zhong Nanshan have played a(n)（ ）（ ）role in containing the spread of COVID-19.
A.significant B.self-esteem C.critical D.cooperate E.volunteer F.beneficial G.effective H.contribution正确答案A
