1.administer v.管理，执预to manage or supenise the execution,use,or conduct of）；用药( dispense of apply(a remedy or drug))
联想记忆：ad（做）+minis(管理)+ter--管理
例:administer tribal lands管理部落的土地，//The nasal spray vaccine is not effective when administered to adults.
派生词:administration(n.管理：管理部门)：administrative(a.管理的，行政的)
2.admit v.(t0)承认(to acknowledge)；准许…进入（to allow entry）
词根记忆：ad+mit(送)--能送进去--准许…进入
例:In a survey of job applicants, two-fifths admitted to being at least a little dishonest.
派生词:admittance(n.准入)：admission(n.准许进入)
3.adolescent n.青少年( young person between childhood and adulthood)；a.青春期的(typical of time between childhood and adulthood)
词根记忆：ado(看作adult成人)+lescent(开始或正在形成的)--开始成为成年人的--青少年
例:The children of authoritative parents are likely to be responsibly independent as adolescents.
派生词:adolescence(n.青春：青春期)
4.adoption n.采用，采纳( accepting)；收养(taking sb.into ones family, esp.as ones child or heir)
词根记忆：来自adopt(v.采用;收养)
例:adoption of new technologies采用新技术//There are far fewer children available for adoption than there are people who want to adopt.
派生词:adoptive(a.采纳的；过继的)
5.advent n.到来，出现( coming into being or use)
词根记忆：ad+vent(来)--到来
例:The advent of private hospital health insurance guaranteed the private hospital a regular source of income.
同根词：intervention(n.干涉)：convention(n.大会;习俗)
6.adverse a.逆的(acting against or in a contrary direction)；不利的(unfavorable, harmful)
词根记忆：ad+vers(转)+e一对着转一逆的，不利的
例:The adverse effects of poor performance by the firm are significant for the client.
派生词:adversely( ad.反过来，相反)：adversary(n.敌手，对手)
7.advertising n.广告：广告业( the business of preparing advertisements for publication or broadcast)
词根记忆：来自advertise(v.做广告)
例:A key decision required of advertising managers is whether ahard-sell or soft-sell strategy is appropriate for a specific target market.
同根词：advertisement(n.广告：宣传)
8.advocacy n.拥护，支持( the act or process of advocating)
词根记忆：来自advocate(v.提倡;拥护)
例:Traditional news sources seldom report the views of political advocacy groups accurately.
9.advocate v.提倡，支持(to support) n.支持者，提倡者(adherent)
词根记忆：ad+voc(叫喊，声音)+ate--为其摇旗呐喊--支持
例:The school board adVocated purchasing new books.
派生词:advocacy(n.拥护；鼓吹)
10.aerodynamic a.空气动力学的(of a science dealing with the forces acting on solid bodies moving through air)
词根记忆：aero(空气)+dynamic(动力学的)--空气动力学的