.affect v. 影响advertise v.广告afford v.负担得起adapt v.适应adjust v.调整advanced adj.高级的,年迈的adopt v.收养,采纳appeal v.呼吁,有吸引attitude n.态度assume v.假设attract v.吸引assist v.协助astonish v.惊讶assemble v.集合,聚集artificial adj.人工的,人为的available adj.可利用的,可得到的average adj.平均的,普通的avoid v.避免aware v.意识到appreciation n.欣赏,感谢background n.背景,经历balance n.平衡bargain v.讨价 n.便宜货barely adv.仅仅,只不过base n.基础v.把建立在的基础上(on)beneath prep.在下面behavior(u)r n.行为believe v.相信benefit n.益处,好处