A.restore the language function of the damaged system in the left brain
B.hinder the damaged structure in the brain from deteriorating sharply
C.improve the structures of the underdeveloped systems in the right brain
D.practise the parts of the brain which are under constant use
A.the characteristics of shy people
B.the cause of shyness
C.the questions in the minds of shy people
D.the effect of shyness on people
A.harmful to people
B.a weak point of shy people
C.the cause of unhappiness
D.a good quality
A.have no effect on them
B.have a favourable effect on them
C.have an unfavourable effect on them
D.can hardly be overcome