一位美国体育明星将参加在购物城举行的体育品牌发布会
A.
A sports product launch in the shopping mall will be attended by an American athlete
B.
An American athlete will attend a sports game in the downtown stadium.
C.
An American athlete will join a sports club in the sports product launch
D.
In the shopping mall an American athlete will appear and sign his name on items of the sports product launch