Only under special circumstances ______________________ (才允许大一学生参加补考).

A．They are unimportant and should be disregarded.
B．They may give us helpful clues about ourselves.
C．Only a trained psychologist can interpret them with success.
D．They should never be interpreted literally.

A．At the information desk.
B．On the platform.
C．On the train.
D．Near the stairs.