Some important dates in China's fighting Covid﹣19 before May 7，202
Jan 20，2020～ Feb 20，2020	Jan 23：Wuhan declared temporary outbound （向外的） traffic restrictions． Jan 24：National medical teams began to be sent to Hubei and wuhan． Jan 27：The Central Steering （指导） Group arrived in Wuhan． Feb 18：The daily number of newly cured and discharged （出院） patients exceeded that of the newly confirmed cases．
Feb 21，2020～ Mar 17，2020	Feb 21：Most provinces and equivalent administrative units started to lower their public health emergency response level． Feb 24：The WHO﹣China Joint Mission on Covid﹣19 held a press conference in Beijing． Mar 11﹣17：The epidemic（流行病） peak had passed in China as a whole．
Mar 18，2020 ～Apr 28，2020	Apr1：Chinese customs began NAT （核酸检测） on inbound arrivals at all points of entry． Apr 8：Wuhan lifted outbound traffic restrictions． Apr 26：The last Covid﹣19 patient in Wuhan was discharged from hospital．
Apr 29，2020～ May 7，2020	Apr 30：The public health emergency response was lowered to Level 2 in the Beijing﹣Tianjin﹣Hebei region． May 7：The State Council released Guidelines on Conducting Covid﹣19 Prevention and Control on an Ongoing Basis．

（1）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 press conference．
C．	The last Covid﹣19 patient in Wuhan was discharged from hospital．
D．	Beijing lowered its emergency response level．

（2）From which date were private cars allowed to go out of Wuhan？ 　　

A．	January 23．
B．	March 11．
C．	April 8．
D．	May 7．