（A）The Central Steering Group arrived in Wuhan.
（B）The WHO-China Joint Mission on Covid-19 held a press conference.
（C）The last Covid-19 patient in Wuhan was discharged from hospital.
（D）Beijing lowered its emergency response level.
56. What happened between January 20 and February 20? （ ）
（A）The Central Steering Group arrived in Wuhan.
（B）The WHO-China Joint Mission on Covid-19 held a pressconference.
（C）The last Covid-19 patient in Wuhan was discharged fromhospital.
（D） Beijing lowered its emergency response level.
57. From which date were private cars allowed to go out of Wuhan? （ ）
（A）January 23
（B）March 11
（C）April 8
（D）May 7.
正确答案
A,C
A,C
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