quEstions 11 to 15 ArE BAsED on thE Following intErviEw.

A、to ExpEriEnCE A FlooD DisAstEr At First hAnD、
B、to stuDy grAin trADE.
C、to mAkE A lECturE tour.
D、to AttEnD An intErnAtionAl ConFErEnCE on grAin proDuCtion.