购买者介入程度高、品牌差异程度小的消费者购买行为可以认为是（ ）
A.复杂的购买行为
B.多样性的购买行为
C.减少失调感的购买行为
D.习惯性的购买行为
正确答案是C
Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
At the conference the chairman made a detailed （ ） of the international economic situation. (appraise)
