Choose the ideas below that were mentioned in the lecture.[音频]

A. Psychology is a very popular filed of study.
B. Phobias are actually a fairly common psychological problem.
C. Unlike a normal fear, a phobia is an extreme fear.
D. People with phobias often have strong physical reactions.
E. A defining characteristic of a phobia is that the reaction is difficult to control.
F. People with phobias are usually afraid to go to doctors.
G. Phobias can only be learned.
H. Being attacked by a dog can cause a phobia of dogs.
I. Some phobias reflect more serious underlying problems.
J. Psychologists have not found a successful treatment for phobias yet.