quEstion 30 is BAsED on thE Following nEws.At thE EnD oF thE nEws itEm, you will BE givEn 5 sEConDs to AnswEr thE quEstion.
now, listEn to thE nEws.
At lEAst onE wEEk.
B．sEvEn months.
C．onE month.
D．At lEAst thrEE wEEks.