中考英语内容包括听力、阅读例句、完型填空、写作等多个部分，其中，中考英语阅读理解所占的比重是非常大的。想要在中考英语中拔得头筹，千万不要忽略阅读理解部分的训练。
Passage:
Every year, millions of birds migrate across the world. They travel long distances to find food and nest in different places. migration is a fascinating process to watch and study.
One of the most well-known migrations is the journey of the monarch butterfly. These beautiful insects travel from Canada and the United States to Mexico each winter. They cover thousands of miles to reach their destination.
The migration of the humpback whales is also incredible. These large marine mammals travel from Antarctica to tropical waters to breed and give birth. They swim thousands of miles to find the perfect environment for their young.
The reasons for migration vary among different species. Some birds and animals migrate to find food, while others move to escape harsh weather conditions. Some species migrate to avoid predators or to find a suitable mate.
Migration is a complex process that requires a lot of energy and determination. These animals and insects have evolved special behaviors and physical adaptations to help them survive the journey. For example, birds migrating across the ocean may float on the water and use the moon and stars for navigation.
Scientists study migration to understand how animals and insects are affected by changes in their environment. By learning about migration, we can better protect these incredible creatures and their habitats.
Questions:
1. What is the main idea of this passage?
A. Migrating animals and insects are fascinating to watch.
B. Migration is a complex process that requires a lot of energy.
C. Millions of birds migrate every year to find food and nest.
D. Scientists study migration to protect incredible creatures.
2. Why do birds and animals migrate?
A. To find food and nest in different places.
B. To escape harsh weather conditions.
C. To avoid predators and find a suitable mate.
D. All of the above.
3. What is the journey of the monarch butterfly an example of?
A. Bird migration.
B. Insect migration.
C. Whale migration.
D. None of the above.
4. How do birds migrating across the ocean survive the journey?
A. They float on the water and use the sun for navigation.
B. They float on the water and use the moon and stars for navigation.
C. They swim continuously and avoid predators.
D. They form groups and follow other birds.
5. Why do scientists study migration?
A. To understand how animals and insects are affected by changes in their environment.
B. To learn about the behaviors and physical adaptations of migrating creatures.
C. To protect the habitats of migrating animals and insects.
D. All of the above.
答案解析：
1. D - 科学家研究迁徙以保护这些令人惊叹的生物。文章最后一句提到，通过学习迁徙，我们可以更好地保护这些生物和它们的栖息地。
2. D - 鸟和动物迁徙是为了找到食物和栖息地，逃避恶劣的天气条件，避免捕食者，找到合适的伴侣等。
3. B - 帝王蝶的迁徙是昆虫迁徙的例子。文章中提到，帝王蝶每年从加拿大和美国迁徙到墨西哥。
4. B - 鸟类迁徙穿越大洋时，他们漂浮在水上，使用月亮和星星进行导航。文章中提到，鸟类使用月亮和星星来帮助他们在大洋上导航。
5. D - 科学家研究迁徙的原因包括了解动物和昆虫如何受到环境变化的影响，学习迁徙生物的行为和生理适应，以及保护迁徙动物和昆虫的栖息地。
