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2018年6月大学英语四级考试CET4阅读理解真题及答案解析(完整版)

作者:新都教育    文章来源:新都网    点击数:    更新时间:2018/6/16

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--------------以下开始为2017年12月的真题及答案,考生可在考前作为复习使用--------------

 

Part Ⅲ   Reading Comprehension     (40 minutes)
Section A
Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.

   A rat or pigeon might not be the obvious choice to tend to someone who is sick, but these creatures have some ___26___ skills that could help the treatment of human diseases.
   Pigeons are often seen as dirty birds and an urban ____27___, but they are just the latest in a long line of animals that have been found to have abilities to help humans. Despite having a brain no bigger than the ___28___ of your index finger, pigeons have a very impressive ____29____ memory. Recently it was shown that they could be trained to be as accurate as human at detecting breast cancer in images.
   Rats are often ___30____ with spreading disease rather than ___31___ it, but this long-tailed animal is highly ___32___. Inside a rat’s nose are up to 1,000 different types of olfactory receptors (嗅觉感受器), whereas humans only have 100 to 200 types. This gives rats the ability to detect ___33___ smells. As a result, some rats are being put to work to detect TB(肺结核). When the rats detect the smell, they stop and rub their legs to ___34___ a sample is infected.
Traditionally, a hundred samples would take lab technicians more than two days to ___35___, but for a rat it takes less than 20 minutes. This rat detection method doesn’t rely on specialist equipment. It is also more accurate — the rats are able to find more TB infections and, therefore, save more lives.


答案:
26. [K] superior
27. [D] nuisance
28. [M] tip
29. [O] visual
30. [A] associated
31. [F] preventing
32. [H] sensitive
33. [I] slight
34. [C] indicate
35. [J] specify

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