One really important part of staying healthy is looking after our lungs. Our lungs help us breathe, and breathing is what keeps us alive!
One way to look after our lungs is by regularly doing physical activity. When we run, jump, or play sports, our lungs must work harder to keep up with all the action. Our lungs breathe in clean fresh air that is then used by the heart to pump oxygen-rich blood around our bodies to make them stronger and healthier.
Another important thing we can do is make positive health choices. This means eating lots of colourful fruits and vegetables, eating plenty of lean protein and carbohydrates, drinking plenty of water and getting enough sleep each night. When we take care of our bodies by giving them the right fuel and enough rest, we’re helping to keep ourselves healthy and happy.
But sometimes, we might come across things that aren’t so good for our bodies, like vaping or smoking. These are things that can hurt our lungs and make it harder for us to breathe. When we choose not to vape or smoke, we’re not only protecting our lungs from aerosols (气溶胶) and smoke and our brains from addictive nicotine (尼古丁), but we’re also setting ourselves up for lifelong health benefits. By taking care of our bodies now, we’re helping to make sure that we stay healthy and strong as we grow older.
So, whether it’s by playing outside with friends, eating yummy fruits and vegetables, or saying no to things that aren’t good for us, there are lots of ways we can keep our bodies fit and ready to play. And by making these healthy choices, we’re not only taking care of ourselves, but also setting ourselves up for a lifetime of health and happiness. So, take a breath and get plenty of fresh air, ensure you get at least eight hours of sleep each night, physical activity each day, keep making smart choices — and keep being awesome!
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1.How should we build ourselves up and keep healthy?
A Try all kinds of exercise.
B Breathe in clean fresh air.
C Take exercise regularly.
D Get enough oxygen.
解析：选C。C细节理解题。根据第二段中的“One way to look after our lungs is by regularly doing physical activity.”可知，我们需要定期进行体育活动，才能更好的照顾身体。故选C。
2.What’s the third paragraph mainly about?
A Bad living habits.
B Healthy lifestyle.
C Special diet.
D Positive attitude.
解析：选B。B段落大意题。根据第三段中的“make positive health choices”“eating”“drinking”“enough sleep”等可知，该段侧重于描述健康的生活方式。故选B。
3.What harm does smoking do according to the author?
A Prevent us from breathing.
B Avoid long-term benefits.
C Hurt our brains and lungs.
D End our life earlier and easier.
解析：选C。C细节理解题。根据倒数第二段中的“These are things that can hurt our lungs”“protecting...our brains from addictive nicotine (尼古丁)”可知，吸烟对肺部和大脑都有害。故选C。
4.What’s the author’s purpose in writing the last paragraph?
A To present different ideas.
B To provide more evidence.
C To introduce a related topic.
D To draw the final conclusion.
解析：选D。D推理判断题。根据最后一段中的“So, whether it’s by playing outside with friends, eating yummy fruits and vegetables, or saying no to things that aren’t good for us”（所以，无论是和朋友出去玩，吃美味的水果和蔬菜，还是拒绝对我们不好的事情），并结合前文提到的几点建议可知，作者在最后一段进行全文总结。故选D。
