D
主题:科普知识 体裁:说明文 难度:★★★★ 建议用时:7分钟 正确率: /4
People know animals do have feelings, but they are not sure if these feelings are correctly understood. In recent years, scientists have done research into the feelings of cows, frogs and pandas. ▲ It says that humans can tell(识别) whether a chicken is happy or sad by listening to its calls.
The researchers put a bowl behind a door. Inside the bowl, sometimes, there was something chickens love to eat, such as rice or insects. Sometimes, there was nothing. When the chickens saw food behind the door, they seemed happy and produced fast and loud sounds, known as food calls. When there wasn't food, the chickens made low and long noises to express their disappointment(失望). The researchers recorded all these sounds and studied their waves.
Then the researchers chose 16 recordings of such chicken noises. Half were from the chickens seeing the food and half were from the chickens finding no food. The recordings were played to 194 volunteers. Sixty-nine per cent of the volunteers correctly understood whether the chickens were feeling happy or not, and some of them even had no experience of taking care of chickens.
The result shows that humans have the natural ability to understand the feelings of chickens. Hopefully, this finding can bring about new technology to help with chicken-raising, a big industry in many countries. Some scientists are already working on a smart computer programme that can identify chickens' feelings. This is good news for farmers who want to make the birds happier and healthier.
()27. 新考法 补全文章 Which of the following can be put in " ▲ " in Paragraph 1?
A. Humans may not like animals. B. Scientists know nothing about it.
C. Nobody knows why this happens. D. A new study adds chickens to the list.
()28. 跨学科 数学 Which is most probably the sound wave of a happy call by a chicken?

()29. What does the underlined word "identify" mean in Chinese in Paragraph 4?
A. 控制 B. 隐藏 C. 识别 D. 记录
()30. What is the best title for the passage?
A. Chickens' Food Calls B. Happy Chickens, Sad Chickens
C. Farmers' Best Choice D. Smart Farmers, Healthy Farmers

27. D 补全文章题。根据“It says that humans can tell whether a chicken is happy or sad by listening to its calls.”可知，研究包括了鸡，所以选项 D“一项新的研究将鸡加入了这个名单。”符合语境。故选 D。
28. D 图示理解题。根据“When the chickens saw food behind the door, they seemed happy and produced fast and loud sounds, known as food calls.”可知，当鸡看到食物时，它们会发出快速而响亮的声音，选项 D 符合“快速而响亮的声音”这一描述。故选 D。
29. C 词义猜测题。根据“This is good news for farmers who want to make the birds happier and healthier.”和上文可知，研究人员希望识别鸡的情感，这样在养殖时，可以让这些家禽更快乐、更健康，所以“identify”意为“识别；知道”。故选 C。
30. B 标题归纳题。文章主要介绍了鸡的快乐和不快乐的情感以及人类对其感知的能力，因此选项 B“Happy Chickens, Sad Chickens”最符合文章主题。故选 B。