4. The________ responsible for COVED-19, SARS-CoV-2, is a novel coronavirus that was first identified in December 2019 in the city of Wuhan, Hubei province, China.
(A) pollutant
(B) allergen
(C) vector
(D) pathogen
(E) pollen
答案:登入後查看
統計: A(0), B(0), C(2), D(38), E(0) #3222652
統計: A(0), B(0), C(2), D(38), E(0) #3222652