集体心理治疗的有效性来源于

A．团体的情感支持
B．群体的相互学习
C．群体的正性体验
D．重复(矫正)原本家庭经验
E．以上均是

.

— Which of these electronic watches do you like?

— ______of them. They are expensive and of little use.

A．None

B．All

C．Both

D．Either