11. By law, when one makes a large purchase, he should have ___ opportunity to change his mind.
A. accurate B. urgent C. excessive D. adequate

<purchase>
purchase 购买
chase 追求
forget-me-not 勿忘我
go after 追求，追逐
appointment 约会，任命
pick up 追求
dump 甩掉，抛弃，倾倒
</purchase>

<accurate>
accurate 精确的
cure 治愈
curious 好奇的
curiosity 好奇心
secure 安全的
</accurate>

<excessive>
excessive 过度的，过分的
access 接近
incessant 永不停息的，不断的，不停的
process 前进，加工
success 成功
</excessive>

<adequate>
adequate 足够的
adult 成年人
adultery 通奸
shame 羞愧
ambition 雄心勃勃的，野心的
evident 明显的， 显著的
</adequate>

<abash>
clash 撞击
crash (飞机)坠毁
smash 粉碎，击碎
ash 废墟，灰烬
abash 使羞愧
ashamed 羞愧
cash 现金
</abash>

<brief>
brief 简洁的
grief 悲伤
relief 缓解，减轻
</brief>