大学英语六级考试阅读单词：17

　　[背景了解]
　　文章取自于2003年9月的阅读真题，是关于维生素的文章，选段很短，希望耐心看下，自己先猜下划线部分单词的意思吧
　　[文章部分]
　　Multivitamins are no substitute for exercise and a balanced diet, of course. As long as you understand that any potential benefit is modest and subject to further refinement, taking a daily multivitamin makes a lot of sense.
　　[单词学习]
　　Multivitamin adj.多种维生素的n.多种维生素剂 ( multi- 前缀表示"种种","多","多方面的"）
　　substitute n.代用品, 代替者, 替代品v.代替, 替换, 替代
　　potential adj.潜在的, 可能的, 势的, 位的
　　modest adj.谦虚的, 谦让的, 适度的
　　refinement n.精致, (言谈, 举止等的)文雅, 精巧
　　[课后作业]
　　今天的作业就是翻译下面几个句子,来试下吧
　　1.He substitutes as our teacher of English.
　　2.Careful analysis of the data can reveal some potential problems..
　　3.He's got a drawer full of medals but he's too modest to wear them.
　　4.Gasoline is produced by the refinement of petroleum.
　　5.As long as you understand that any potential benefit is modest and subject to further refinement, taking a daily multivitamin makes a lot of sense.
　　答案：1.他代任我们的英语教师。
　　2.对数据仔细的分析能够揭示一些潜在的问题。
　　3.他有满满一抽屉的奖章,但是他很谦虚,从不戴它们。
　　4.汽油是由石油经过提炼生产出来的。
　　5.只要你明白任何潜在的益处都需适度，并且需要逐步得到发挥，那么，每天服用多种维生素就会有意义。