问题

e of his devotion music, he has become friendly with MrsKeith,a pop singer
A:they have to watch out for possibleattacks
B:their brain hemispheres take turns torest
C:the two halves of their brain aredifferently structured
D:demand
B:their brain hemispheres take turns torest
C:the two halves of their brain aredifferently structured
D:demand
正确答案是: