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2018年12月四六级真题答案
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2018年12月大学英语四级阅读解析
今年四级考试在阅读这个版块里，总体难度仍然呈较为平稳的发展态势。无论是选词填空、长篇阅读还是仔细阅读，与在四级课堂上讲到的解题技巧都有很高的契合度。
首先一起来谈谈选词填空这个题型。总的来说，考点仍然是课堂上反复跟大家强调的，用我们上课讲到的快速解题法则很快能得到正确答案。首先第一步分析选项词性。今年名词考2个，动词考5个，形容词考1个，副词2个。如此一来，我们很快把15选1缩小到了最多是7选1，最少的情况是1选1。另外，请注意，名词通过单复数，动词通过时态和非谓语动词还可以进一步缩小范围。选词填空答案如下：
26. F Damage
27. B associated
28 .M sources
29 .D constant
30 .G described
31 .E control
32 .H equals
33 .K regularly
34. I exclusively
35 .O vehicles
长篇阅读难度持平，用定位法则快速找定位即可，特别要注意的是题干中只出现的大写专有名词、数字、时间、连词符和只出现过一次的表达。今年的匹配题比较难，少数题干出现了同义替换的现象，大多数还是按照我们说的用到的是类似的表达和词性的替换。匹配题答案如下：
36-40 DBGFI 41-45 FCJEG
36. More than half of the food Americans eat is factory-produced
37.There is a special program that assigns doctors to give advice to shoppers in food stores.
38.There is growing evidence from research that food helps patients recover from various illnesses.
39. A healthy breakfast can be prepared quickly and easily.
40.Training a patient to prepare healthy fod can change their life.
41. One food-as-medicine program not only prescribes food for treatment but teaches patientshow to cook it.
42. Scott is nat keen on cooking food herself thinking it would simply be a waste of time43. Diabetes patients are advised to eat more plant-based food
44.Using food as medicine is no novel idea but the movement is making headway these days.
45. Americans high rates of various illesses result from the way they eat.
再来谈谈仔细阅读部分。我们在课堂上跟大家反复强调过，四级仔细阅读的核心在于四个字“精准定位”，今年所涉及到的考点全部是我们之前课程中所涵盖到的。第一篇的题干中几乎没有大写专有名词出现，大家需要注意每道题题干中的名词短语和动宾搭配进行定位。第二篇定位难度不大，但是由于考到的文章主题为AI，定位简单的基础上，难点在于定位处和选项的对应。特别要注意的是，今年的51题考到了之前很少考的例证题。仔细阅读答案如下：
46. How could california's drought crisis be solved according to some researchers?
B- By drawing water from the depths of the earth
47. What can be inferred about extracting water from deep aquifers?
B - It was not considered worth the expense
48. What is mentioned as a consequence of extracting water from deep underground?
A- The sinking of land surface
49. What does the author say about deep wells?
D- They provide a steady supply of freshwater
50 What may happen when deep aquiters are used as water sources?
C- The cost may go up due to desalination.
51. What does the author want to show with the example of AlphaGo's victory?
D- Computers can become highly inelilence
52. What does the author 'mean by Al machines acting ethically?
C- They make sensible decisions when facing moral dilemmas.
53. What is said to be the bigger challenges facing humans in the AI age?
B- How to ensure that super- intllient AI machines act ethically.
54. What do we learn about Microsoft's 'chatbot' Taylor?
A- She could not distinguish good from bad.
55. What does Eric Schmidt think of artificial intelligence?
D- It will be here to stay whatever the outcome.
总而言之，只要大家在考试过程中熟练地运用了之前课堂上学到的解题方法，取得好成绩也是顺理成章的。
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