—Jenny, do you want to be a doctor in the future?
—No, my mom expects me a doctor but I want to he a teacher.
A：be
B：is
C：was
D：to be
在一根长为0.2m的直导线中通入2A的电流，将导线放在磁感应强度为0.5T的匀强磁场中，则导线受到的安培力的大小可能是（ ）
—________
