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Plains wanderers are small, rare birds that live in grasslands. Unlike most birds, female plains wanderers are larger and stronger than males. Females take the lead in protecting their nests and babies from animals like foxes, while males often sit on the eggs to keep them warm. These birds are hard to find because their feathers blend into the grass, making them look like part of the landscape. Sadly, their numbers have been dropping because people are taking over their grassland homes for farms and cities.

To save them, scientists are using AI. The key is the birds’ calls. Mother wanderers make soft sounds to talk to their chicks and warn about danger. These calls are quiet and easy to miss, but AI can hear them clearly. Scientists put microphones in the grasslands to record sounds all day and night. Then they put these recordings into a computer program. The AI learns to tell the wanderers’ calls apart from other noises, like the wind blowing or insects chirping. This helps scientists find where the mother birds are and how many chicks they have.

“AI helps us monitor these birds without bothering them,” says Dr. Lee, who leads the project. “We can find the most important areas for them and work to protect those places.” Once, the AI helped scientists find a hidden nest with three baby birds. Without AI, they might not have found it. Thanks to this technology, there is new hope for these rare birds, showing that AI can be a powerful tool in saving wildlife.

1.1. What do we know about plains wanderers?

A Males are larger than females.

B They are easy to find in grasslands.

C Mother birds are bigger and protect babies.

D They are common in many habitats.

解析：选C。C 细节理解题解析：题干问 “关于草原鹨我们知道什么”，需定位原文第一段关键信息： A 选项 “雄性比雌性大” 与原文 “female plains wanderers are larger and stronger than males”（雌性更大更强壮）矛盾，排除； B 选项 “在草原易被发现” 与原文 “These birds are hard to find”（难以发现）矛盾，排除； C 选项 “母鸟体型更大且保护幼鸟” 对应原文 “female plains wanderers are larger and stronger... Females take the lead in protecting their nests and babies”，表述一致，正确； D 选项 “在多种栖息地常见” 与原文 “small, rare birds that live in grasslands”（稀有、仅生活在草原）矛盾，排除。

2.2. The underlined word “monitor” in the last paragraph probably means “________”.

A see

B catch

C feed

D follow

解析：选D。D 词义猜测题解析：定位划线词 “monitor” 所在语境：“AI helps us monitor these birds without bothering them”（AI 帮助我们在不打扰鸟类的情况下____它们），结合后文 “find where the mother birds are and how many chicks they have”（找到母鸟位置和幼鸟数量），可知 “monitor” 是 “监测、追踪” 的含义。 A（看见）、B（捕捉）、C（喂养）均不符合 “不打扰且获取位置 / 数量信息” 的语境，D（追踪）最贴合，故选 D。

3.3. How do scientists use AI to find plains wanderers?

A By taking photos of their nests.

B By tracking their flying paths.

C By counting eggs in the grass.

D By analyzing calls from mother birds.

解析：选D。D 细节理解题解析：题干问 “科学家如何用 AI 寻找草原鹨”，定位第二段核心逻辑：原文明确提到 “The key is the birds’ calls... Mother wanderers make soft sounds... AI learns to tell the wanderers’ calls apart from other noises”（关键是鸟类的叫声，母鸟的叫声能被 AI 区分），即通过分析母鸟的叫声实现寻找。 A（拍鸟巢照片）、B（追踪飞行路径）、C（数草地上的鸟蛋）均未在原文提及，D（分析母鸟的叫声）与原文一致，正确。

4.4. What is the passage mainly about?

A Why plains wanderers are rare.

B How mother wanderers protect their chicks.

C What AI can do in daily life.

D How scientists use AI to protect plains wanderers.

解析：选D。D 主旨大意题解析：文章结构为 “介绍鸟类现状→AI 保护方案→技术效果”：第一段讲草原鹨的特点和濒危原因，第二段详细说明科学家用 AI 分析叫声监测鸟类的方法，第三段强调 AI 技术的价值。核心围绕 “AI 助力保护草原鹨” 展开。 A（草原鹨濒危的原因）仅为第一段内容，非主旨； B（母鸟如何保护幼鸟）是细节信息，不全面； C（AI 在日常生活中的作用）范围过大，文章仅聚焦 “保护野生动物” 的应用； D（科学家如何用 AI 保护草原鹨）涵盖核心对象、方法和目的，是全文主旨，正确。