By law,when one makes a large purchase, he should have opportunity to change his mind.
A. accurate
B. adequate
C. urgent
D. excessive
网友回答
A. accurate
(答案→)B. adequate
C. urgent
D. excessive
解析：词义辨析。A. 精确地 B. 充足的；适当的 C. 紧急的 D. 极度的；过分的。句意：根据法律，当一个人大量购买时，他应该有一个适当的机会改变主意。故选B。