12月英语四级考试答案精讲卷一（续）.docxVIP

Word文档下载后（可任意编辑） 第 第 PAGE 1 页 共 NUMPAGES 1 页 12月英语四级考试答案精讲卷一（续） 英语四级考试试题：12月英语四级考试答案精讲（卷一）（续） 英语四级考试精品课程  PartⅢ  Reading Comprehension  (40 minutes)  A rat or pigeon might not be the obvious choice to tend to someonewho is sick, but these creatures have some_____ (27) skills that could help thetreatment of human diseases.  Pigeons are often seen as dirty birds and an urban_____ (28), butthey are just the latest in a long line of animals that have been found to haveabilities to help humans. Despite having a brain no bigger than the_____ (29)of your index finger, pigeons have a very impressive_____ (30) memory. Recentlyit was shown that they could be trained to be as accurate as humans a detectingbreast cancer in images.  Rats are often_____ (31) with spreading disease rather than_____(32) it, but this long-tailed animal is highly_____ (33). Inside a rats noseare up to l,000 different types of olfactory receptors(嗅觉感受器),whereas humans only have 100 to 200 types. This gives rats the ability todetect_____ (34) smells. As a result, some rats are being put to work to detectTB(肺结核). When the rats detect the smell, they stop and rub their legs to_____(35) a sample is infected.  Traditionally, a hundred samples would take lab technicians morethan two days to_____ (36), but for a rat it takes less than 20 minutes. Thisrat detection method doesnt rely on specialist equipment. It is also more accurate—the rats areable to find more TB infections and, therefore, save more lives.  A.associated  B.examine  C.indicate  D.nuisance  E.peak  F.preventing  G.prohibiting  H.sensitive  I.slight  J.specify  K.superior  L.suspicious  M.tip  N.treated  O.visual  27.【题干】_____.  【答案】K  28.【题干】_____.  【答案】D  29.【题干】_____.  【答案】M  30.【题干】_____.  【答案】O  31.【题干】_____.  【答案】A  32.【题干】_____.  【答案】F  33.【题干】_____.  【答案】H  34.【题干】_____.