A rat or pigeon might not be the obvious choice to tend to someone who is si

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问题 A rat or pigeon might not be the obvious choice to tend to someone who is sick, but these creatures have some【C1】______ skills that could help the treatment of human diseases.
Pigeons are often seen as dirty birds and an urban【C2】______ , 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【C3】______ of your index finger, pigeons have a very impressive【C4】______ memory. Recently it was shown that they could be trained to be as accurate as humans at detecting breast cancer in images.
Rats are often【C5】______ with spreading disease rather than【C6】______ it, but this long-tailed animal is highly【C7】______ . 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【C8】______ 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【C9】______ a sample is infected.
Traditionally, a hundred samples would take lab technicians more than two days to【C10】______ , 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 I) slight
B) examine J) specify
C) indicate K) superior
D) nuisance L) suspicious
E) peak M) tip
F) preventing N) treated
G) prohibiting O) visual H) sensitive [br] 【C1】

选项

答案 K

解析形容词辨析题。空格前为some，空格后为名词skills，故应填入形容词。由于上文提到，老鼠和鸽子也许并不是照看病人的最好的选择，是对这两种动物的一种否定，但从转折词but可以看出，空格所在句应该是对这两种动物的肯定，因此应填入有积极含义的形容词。K)superior意为“较好的”，符合句意，故为答案。备选形容词中，H)sensitive“敏感的”，I)slight“轻微的”，L)suspicious“可疑的，怀疑的”均不适合修饰skills，而O)visual“视觉的”没有积极和肯定的含义，故排除。

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