消费认知理论主要研究消费领域中的()。
A.信息处理问题
B.购买决策问题
C.消费者特性
D.信息特性
参考答案:C
分解因式:
(1)-3a3b+18a2b2-27ab3
(2)a2-a-9b2-3b
(3)(a2+4b2)2-16a2b2.
—Can you see some people are waiting _____ the library?
—Yes. They are standing in a queue in front of its gate. [ ]
A. around
B. inside
C. outside
D. within