An important feature of consumer society is that we gain self-confidence through we own.A

问题补充：

An important feature of consumer society is that we gain self-confidence through we own.

A. that

B. what

C. which

D. /

答案：

A. that

(答案→)B. what

C. which

D. /

解析：句意：社会消费很重要的一个特征是我们通过已经拥有的，来获取自信。这个句子含有一个宾语从句，且引导词在从句中作宾语，表示“什么”的意思，故用what，选B。