7. A) He has learned a lot from his own mistakes.
B) He is quite experienced in taming wild dogs.
C) He finds reward more effective than punishment.
D) He thinks it important to master basic training skills.
答案
C) He finds reward more effective than punishment.
原文
7. W: Your dog certainly seems to know you are his master. Did you have to punish him very often when you trained him?
M: I found it's much better to praise him when he obeys and not to be so fussy when he makes mistakes.