the country. These science playlands are great fun for kids and grownups alike. They'll keep your child mentally and physically active the whole day through while pushing buttons(按钮), experimenting, and building. When everyone is tired, enjoy a fun family science show, commonly found in these museums.

4．If a child is interested in the universe(宇宙), he probably will visit______.

A. a Youth center B. an art museum C. a natural history museum D. a hands-on science museum 5．What can kids do at a Youth center?

A. Look at rock collections. B. See dinosaur models. C. Watch puppet making. D. Give performances. 6．What does "hands-on science" mean in the last paragraph?

A. Science games designed by kids. B. Learning science by doing things. C.A show of kids' science work. D. Reading science books. 7． Where does this text probably come from?

A.A textbook. B.A tourist map. C.A museum guide. D.A news report. C

You may have noticed that you feel hungry a lot. This is natural----during teens, a person's body needs more nutrients(营养物质) to grow. Snacks are a great way to satisfy that hunger and get all the vitamins and nutrients your body needs.

But you need to pay attention to what you eat. Filling your stomach with a lot of fries after class may give you a short-time help, but a snack high in fat and calories will only slow you down in the long time.

To keep energy levels going---and avoid gain weight---keep away from foods like candy or soda. Look for foods like bread and grains and combine them with some food like peanut butter or low-fat milk or cheese.

Choosing healthy snacks means shopping smart. Be careful of the health instructions on food bags. Here are some things to watch out for.

That something is "all natural " doesn't necessarily mean that it's nutrients. For example, "all natural" juice drinks or sodas can be filled with sugar (which means they'll be high in calories and