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B 青少年的身高 说明文 ☆☆☆ 6分钟
Maybe you feel like your friends have suddenly grown much taller than you. Maybe you're wondering if you can do anything to catch up. The truth is that a person's height has something to do with the genes(基因). But there are other things that have something to do with your height such as diet and activity levels.
• Eat a balanced diet. A person will look a lot shorter when having a fat body. Keeping fit by eating right will make you taller and feel better!
• Eat plenty of meat. It helps muscles and bones grow. Keep away from junk food.
• Eat plenty of leafy green vegetables and drink milk. This keeps your bones healthy.
• Get enough exercise. Get out and work your muscles for at least 30 minutes each day.
• Join a gym. Joining a gym will help you get exercise with others. You'll feel silly if you're in the gym but not exercising.
• Walk around. If you can't spare the time to exercise, get up and walk around. Walk to the store. Walk to the library. Walk to school.

()1. This passage is written for .
A. teenagers who want to study well
B. teenagers who want to become smarter
C. girls who want to become thinner
D. teenagers who want to grow taller
()2. How many things can affect(影响) your height according to the passage?
A. Two.
B. Three.
C. Six.
D. Seven.
()3. If you want to have healthy bones, you should .
A. have enough vegetables and milk
B. have enough cakes
C. have enough sweets
D. have enough soda
()4. You should if you want your muscles to grow.
A. have junk food
B. have milk
C. eat meat
D. have vegetables

【短文大意】本文介绍了促使青少年长高的一些因素以及长高的方法,如均衡饮食、多做运动等。
1. D 【解析】推理判断题。由全文内容可知,本文介绍了青少年长高的几个因素以及如何长高的方法。
2. B 【解析】推理判断题。由第一段最后两句可知,影响身高的因素除基因外,还有饮食和运动量等。
3. A 【解析】细节理解题。由第四段可知,健康的骨骼与摄入足够的蔬菜和牛奶有关。
4. C 【解析】细节理解题。由第三段可知,吃肉有利于肌肉的生长。