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2016年12月大学英语四级高频词汇活学活用(5)

来源:考试网   2016-10-31   【

  1,Lung cancer, like some other cancers, often doesn’t produce ________ until it is too late and has spread beyond the chest to the brain, liver or bones.

  A) trails

  B) therapies

  C) symptoms

  D) symbols

  题目相关单词解释

  trail:n. 踪迹,小径,尾;v. 拖,尾随,追踪

  therapy:n. 治疗

  symptom:n. 病症,症候,征兆,表征

  symbol:n. 象征,符号,标志

  2,With the increasing unemployment rate, workers who are 50 to 60 years old are usually the first to be ________.

  A) laid off

  B) laid aside

  C) laid out

  D) laid up

  题目相关单词解释

  lay off:解雇;停止做

  lay aside:把...搁置一旁;储存

  lay out:安排,布置;摆出,展开

  lay up:使卧床不起

  3,The physical differences between men and women can be ________ directly to our basic roles as hunters and child-bearers.

  A) pursued

  B) traced

  C) switched

  D) followed

  题目相关单词解释

  pursue:v.追捕,追求,继续从事

  trace:n. 踪迹,痕迹;vt. 跟踪,追踪;追溯,探索;临摹

  switch:n. 开关,突然转变;v. 改变,交换

  follow:vt. 跟随,追赶,沿着…前进,仿效;vi. 跟随,紧接

  4,It is clear that the dog has a much greater ________ of its brain devoted to smell than is the case with humans.

  A) composition

  B) compound

  C) percent

  D) proportion

  题目相关单词解释

  devote:vt. 将…奉献(给),致力于

  composition: n. 作文,著作,组织

  compound:n. 混合物,复合字;a. 复合的,混合的,合成

  percent: n. 百分比,百分数

  proportion:n. 比例,率,份儿,部分,均衡,调和;vt. 使成比例,使均衡

  5,American college students are increasingly ________ with credit card debt and the consequences can be rather serious.

  A) boosted

  B) burdened

  C) discharged

  D) dominated

  题目相关单词解释

  increasingly:ad. 日益地,愈加地

  consequence:n. 结果,后果

  boost:n. 推进,支援;v. 推进,提高

  burden:n.重负,负荷;重担v.使负重,装载;加重压于,烦扰

  discharge:v. & n. 排出,放出,允许…离开,释放,放电

  dominate:vt. 支配的,统治,控制,高出于,居高临下;vi. 居支配地位,处于最重要的地位

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