問題詳情

【題組】42. About how long after the start of the pandemic did people begin getting approvedvaccines for COVID-19?
(A) one year and three months
(B) 2 years
(C) 3 months
(D) 9 months

參考答案

答案:D
難度:適中0.542
書單:沒有書單,新增