adverse a. 不利的， 有害的 Adverse circumstances can test a person s wisdom and courage。

　　aggravate v. 加重 Smoking ~s cold.

　　alleviate v. 减轻 No one can ~ my pain。

　　alternate v./a 交替 a day of ~ sunshine and rain /Day and night ~

　　amplify v. 扩大

　　anonymous a. 匿名的 I received an ~ letter。

　　applaud v. 鼓掌; 赞许 I ~ your suggestion。

　　apt a. 易于 One is ~ to make mistakes if given too much pressure。

　　array n. 陈列， 一系列 the ~of fruit and vegetables in the supermarket

　　arrogant a. 傲慢的 An ~ man is a self-important person。

　　ascend v. 上升 The balloons are ~ing。

　　ascribe v. 归因于 He ~d his failure to his small vocabulary。

　　aspiration n. 抱负 Your ~ is your ambition or strong wish。

　　assault n. 攻击， 袭击 A robber ~ed him。

　　assert v. 断言 He ~ed that the thief would come again。

　　assurance n. 保证， 把握 I give you my ~ that the product is safe and reliable。

　　attendant n. 服务员， 随从

　　authentic a. 真实的， 可靠的 Is Clinton s biography ~?

　　avert v. 避开、转移 We ~ed a loss 。