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      GMAT考试词汇精选(MP3+文本) 第324期:Unit39—7

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      1.validity n.有效性;合法性(state of being legally acceptable);正确性(state of being right)
      词根记忆:来自valid(a.有效的,合法的)
      例:The validity of a new scientific finding was questioned by most scientists.
      2.vanish v.消失(to pass quickly from sight)
      词根记忆:van(空)+ish--消失
      例:Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.
      同根词:vanity(n.空虚;虚荣)
      3.variable n.可变物(something that is variable);变量,变数(a quantity that may assume any one of a set of values)
      词根记忆:vari(变化)+able--可变的--变量
      例:The key variables driving costs are size and type of order.
      同根词:variation(变动):varied(各式各样的)
      4.variation n.变化:变异(the act or process of varying)
      词根记忆:vari(改变)+ation(状态)--变化
      例:There is a considerable degree of variation in shade of color between weeds of different species.
      同根词:variable(a.易变的;n.变量)
      5.varsity n.大学(university);大学代表队(尤指体育)(the principal squad representing a university, college, school, or club especially in a sport)
      例:Their level of participation in extracurricular activities and varsity sports is unusually high.
      6.vegetarian n.素食者(one who believes in or practices vegetarianism);a.素食的(consisting wholly of vegetables fruits, grains, nuts, and sometimes eggs or dairy products)
      词根记忆:veget(植物)+arian--只吃植物的人--素食者
      例:Vegetarians refer to those whose diet consists of plant products only.//The diet of the ordinary Greek in classical times was largely vegetarian.
      7.vegetation n.植被(plant life or total plant cover( as of an area))
      词根记忆:veget(植物)+ation--植物的集合--植被
      例:The relationship between vegetation and climate is not direct.
      同根词:vegetarian(n.素食者)
      8.vegetative a.植物的,有关植物生长的(relating to, composed of,or suggesting vegetation)
      例:A plant's fecundity is high if it can reproduce quickly by means of vegetative growth.
      9.vein n.纹理(texture);矿脉(a regularly shaped and lengthy occurrence of an ore);静脉(a blood vessel that carries blood from the capillaries toward the heart)
      例:A gold-quartz vein system originates in magmatic fluids.
      重点单词   查看全部解释    
      participation [pɑ:.tisi'peiʃən]

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      n. 参加,参与

       
      shade [ʃeid]

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      n. 阴影,遮蔽,遮光物,(色彩的)浓淡
      vt

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      vanish ['væniʃ]

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      vi. 消失,不见了,绝迹
      vt. 消失

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      assume [ə'sju:m]

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      vt. 假定,设想,承担; (想当然的)认为

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      extracurricular [.ekstrəkə'rikjulə]

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      adj. 课外的

       
      variable ['vɛəriəbl]

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      adj. 可变的,易变的
      n. 变量,易变的东

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      ore [ɔ:]

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      n. 矿,矿石

       
      acceptable [ək'septəbl]

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      adj. 合意的,受欢迎的,可接受的

      联想记忆
      reproduce [.ri:prə'dju:s]

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      v. 再生,复制,生殖

       
      occurrence [ə'kʌrəns]

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      n. 发生,事件,发现

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