Solution: (1) As shown in the table, Zhang Ming and Rebecca each touch a ball, and there are 6×5=30 possible results, with equal probability. Zhang Ming's visit to China Pavilion resulted in 15.

∴P (Zhang Ming went to China Pavilion to fulfill his obligations) =.

(2) Zhang Ming and Rebecca got four results in the Expo Axis and the Performing Arts Center respectively, and the probability was P=.