题目内容：

There's a lot of discussion these days about healthy kids. People who care (parents, doctors, teachers, and others) want to know how to help kids be more healthy.

Being healthy is a way of saying a person eats well, gets a lot of physical activity (exercise), and has a healthy weight. If you're healthy, your body works well, feels good, and can do all the things you want to do. Here are five rules to live by, if you're a kid who wants to be healthy.

Eat a Variety of Foods, Especially Fruits and Vegetables. You may have a favorite food, but the best choice is to eat a variety. If you eat different foods, you're more likely to get the nutrients(营养) your body needs. Taste new foods and old ones you haven't tried for a while. Get at least five servings of fruits and vegetables a day — two fruits and three vegetables.

Drink Water and Milk Most Often. When you're really thirsty, cold water is the No. 1 for you. Kids need calcium（钙）to build strong bones, and milk is a great source of this mineral. How much do kids need? Aim for 3 cups of milk per day. You can mix it up by having milk and some other calcium-rich dairy foods .

Be Active.One job you have as a kid — and it's a fun one — is that you get to figure out which activities you like best. Not everyone loves baseball or soccer. Ask your parents to help you do your favorite activities regularly. Find ways to be active every day. You might even write down a list of fun stuff to do, so you can refer to it when your mom or dad says it's time to stop watching TV or playing computer games!

1. What’s the best title for this passage?

A. Do Your Favorite Activities Regularly       B. Eat More Fruits and Vegetables Every Day

C. Drink Water and Milk When You Are Thirsty  D. Tips on How to Keep Healthy

2. Which of the following can’t show a kid is healthy?

A. Eating well                             B. Having too much sleep

C. Having a healthy weight                   D. Getting a lot of physical exercise

3. The best way to get enough nutrients for your body is ________.

A. to drink milk every day              B. to eat what you haven’t eaten before

C. to eat all kinds of foods              D. to eat fruits and vegetables instead of grains

4.The underlined words “this material” in the fourth paragraph refer to _________.

A. calcium      B. calcium-rich dairy food      C. milk     D. nutrients