A. 根据短文内容，完成下列各题。
Many students have so many electronic devices that they spend too much time on their phones and computers. They often stay up late, eat junk food, and don't exercise enough. This can make them feel tired, get sick easily, and even have trouble studying. But we can make small changes to live a healthier life! For example, we can do outdoor activities like running or playing basketball for 30 minutes every day. We should also eat more vegetables and fruits, and drink enough water. Remember: "A healthy body keeps a healthy mind!"
1. 根据上下文，你能猜出画线词 junk food 的中文意思吗？junk food:
2. 请在文中提及的学生不健康的生活方式下画线，并抄写下来。
①
②
3. 从文中找出两种保持健康的方法，写在横线上。
①
②
4. 请用一句话总结健康生活的重要性。(no more than 20 words)

1. 垃圾食品
2. ① They spend too much time on phones and computers.
② They often stay up late, eat junk food, and don't exercise enough.
3. ① Do outdoor activities for 30 minutes every day.
② Eat more vegetables and fruits.
4. A healthy body keeps a healthy mind and helps you study better.