問答題
The outbreak of swine flu that was first deteccted in Mexico was declared a global epidemic on june 11 2009 It is the first wotldwide cpidemic 1 by the Wld Health ganization in41years The hei
The outbreak of swine flu that was first deteccted in Mexico was declared a global epidemic on june 11 2009 It is the first wotldwide cpidemic 1 by the Wld Health ganization in41years The hei
