阿摩線上測驗
37. According to the passage, Corgas and Reed had previously looked for the cause of yellow fever by studying
(A) sanitary conditions.
(B) mosquitoes.
(C) related diseases.
(D) victims of the disease.
答案：登入後查看
統計： A(102), B(60), C(3), D(26), E(0) #2278464
統計： A(102), B(60), C(3), D(26), E(0) #2278464
