新东方英语四级词汇进阶，包含四级考试大纲必备核心词汇，每个单词都有用法实例，此为Lesson 01 第四部分。

　　aim n.目标，计划

　　His aim is to win this game, whatever it takes.他的目标是，不计一切代价贏得这场比赛。

　　These advertisements are specifically aimed at young people.这些广告专门针对年轻人(设计的)。

　　alarm vt.使惊恐;警告

　　I was alarmed by the reports of her disappearance.她失踪的报道，让我大吃一惊。

　　alert adj.机敏的

　　Although he was almost ninety years old, he was still active and alert.快要九十岁了，但他依然非常活跃和机敏。

　　Direct mail advertising serves to acquaint customers with products and alert them to new opportunities.直接邮寄广告可以让消费者熟悉产品，并提醒消费者有新的购买机会。

　　alliance n.联盟，同盟

　　We are going to form a broad alliance among all groups and individuals sincerely interested in building a better city?我们将为那些对建设更好的城市真心感兴趣的组织和个人建立广泛的联盟。

　　alloy n.合金

　　The factory used a special metal alloy for building light car parts.这家工厂使用一种特殊的金属合金制作轻型汽车零部件。

　　Copper is commonly alloy with zinc to make brass.铜通常与锌组成合金，形成黄铜。

　　ally n.联盟，同盟者

　　The two teamed up together to fight their enemies.这两个同盟国联 合起来对抗敌人。

　　I refuse to ally myself to that mob.我拒绝与那个暴徒结成同盟。

　　alongside adv.在…的旁边

　　The new pill will be used alongside existing medicines.那种新药将与现有的药物一起使用。

　　alter v.改变，修改

　　The company will need to alter its business strategy to become more competitive next year.公司必须修改其经营策略，才能在明年更具竞争力。

　　alternative adj.(两种或两种以上的东西中)另一可选用的;供选择的

　　There is an alternative solution to this problem?对于这个问题，有一个替代解决方案。

　　I have no atorwa/zVe but to ask you to leave.我别无选择，只能让你离开。

　　amateur adj.业余的 n.业余爱好者

　　Only amateur athletes are eligible to participate in this game.只有业余运动员才有资格参加这项比赛。

　　He is an amateur at golf but he loves the game.他在高尔夫球方面确实是个外行，但他很热爱这项运动。

（实习编辑：刘佰万）