問題詳情
44. During the COVID-19 pandemic, countries used the contact ______
method, a process of identifying people who had been in contact with a
person diagnosed with the disease, to quickly identify possible
asymptomatic carriers of the virus.
(A)trailing
(B)tracking
(C)tracing
(D)transmitting
參考答案
答案：B
統計：A:3,B:27,C:13,D:3,E:0
難度：適中