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 （嗅覺感受器）, 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（肺結(jié)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.
A)associated? ? ? ? ? ? ? ? ? ? B)examine
C)indicate? ? ? ? ? ? ? ? ? ? ?? ?D)muisance
E)peak? ? ? ? ? ? ? ? ? ? ? ? ? ? ? F)preventing
G)prohibiting? ? ? ? ? ? ? ?? ? H)sensitive
I)slight? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?J)specify
K)superior? ? ? ? ? ? ? ? ? ?? ? ?L)suspicious
M)tip? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? N)treated
O)visual
參考答案：
26. K 較好的，上等的，修飾skills
27.D 根據(jù)and 前后內(nèi)容，此處選擇 令人討厭的東西
28 M 指尖，后文有手指。
29 O 視覺的 修飾記憶力，后文也有images.
30 A be associated with 和...相關(guān)
31 F rather than 表示阻止，介詞后面用doing
32 H敏感的 根據(jù)后文意思它們很敏感選擇H。
33 I 輕微的，修飾后文的氣味。
34 C 根據(jù)前文動(dòng)作，此處是表明，暗示的意思
35 B 檢測(cè)，檢驗(yàn)，根據(jù)后文detection method 此處選擇檢測(cè)。
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