1 . More and more teenagers are becoming unwilling to exercise worldwide. Australia, a nation that prides itself on its outdoor culture, is doing particularly poorly. It is currently ranked (排名) 140th out of 146 countries for teenage exercise levels. The data shows that 85%of girls are physically inactive compared to 78% of boys. In Australia, less than 1 in 10 teenagers aged 12 to 18 are meeting the recommended levels of physical activity.
The current guidelines and evidence show that teenagers should be doing at least 60 minutes of physical activity per day. This should include muscle and bone strengthening activities on at least three days per week, meanwhile limiting recreational screen time to a maximum of 2 hours per day.
Not being active can cause a range of health conditions leading to early adulthood and beyond. Adolescents may have decreased bone and cardio-metabolic (心脏代谢的) health which leaves them facing an increased risk of chronic disease (慢性病) in later life, including type 2 diabetes, heart disease, high cholesterol, and decreased fitness. If you’re not moving enough you’re also at an increased risk of being overweight or obese, with data already showing that 29.8% of teenagers (14-17) are classified as overweight or obese.
So how can we get teenagers to exercise more? Firstly, high schools should place more importance on lunchtime and allow 1-hour breaks that increase physical activity. We should also encourage teenagers to be active on their lunch break. Parents and guardians also have an important role to play and should aim to devote 1 hour a day to moving more. This does not need to be 1 full hour and can be broken down into two 30-minute parts. The most important factor is to identify your teenager’s interests and needs surrounding their physical activity.
Don’t be afraid to ask for help in finding a safe and fun exercise program. A qualified exercise physiologist or exercise scientist can help your child find a way to be more active that is suited to their needs, age of development, and interests.
1. How does the writer show teenagers in Australia lack enough exercise in Paragraph 1?| A．By analyzing reasons. | B．By listing data. |
| C．By making comparison. | D．By giving examples. |
| A．A lack of exercise does lasting harm to health. |
| B．Outdoor activities help build positive characters. |
| C．Most chronic diseases come from getting overweight. |
| D．Teenagers tend to take in more calories than they actually need. |
| A．Parents’ full participation in exercising. |
| B．Arranging a balanced diet for them. |
| C．Taking their interests into consideration. |
| D．Improvement in the school PE course. |
| A．To recommend fun exercise programs. |
| B．To encourage physical activity in teenagers. |
| C．To show the way to build a good living habit. |
| D．To explain the reason for teenagers’ poor health. |
2 . Want to add a simple movement to your daily life? Walking may be your best choice.
Walking is good for your heart
Walking is considered as cardio（有氧的）exercise, no matter the speed at which you take it. Studies show that walking can reduce the risk of heart disease and lower your resting heart rate and blood pressure.
What benefits physical health often benefits mental health-the same is true for walking. Just five minutes of walking can lower anxiety. If you have any kind of green space nearby, try to take advantage of it. One study showed that people who went on a 90-minute nature walk reported fewer bad feelings.
Walking can improve your sleep
Walking can help with fat loss
Walking is a type of cardio workout that is good for fat loss and can help you achieve or keep a healthy weight. It should be done regularly and for long periods of time.
| A．Walking can help reduce stress |
| B．That can help you sleep easily during the day |
| C．Here are some of the benefits walking offers you |
| D．Walking in the day can help you get a better night's rest |
| E．Good walking can also keep your head up and looking ahead |
| F．Experts suggest walking 30 minutes a day, five to seven days a week |
| G．Walking at least 45 minutes a day at a brisk pace will see the most benefits |
3 . A study has found that a lifetime of regular exercise and activity can slow down the aging process and a life of movement and exercise may help us live longer and healthier.
For their study, the researchers looked at two groups. The first group was made up of 125 non-professional cyclists between the ages of 55 and 79. This group included 84 healthy men and 41 healthy women. We will call this group the “cyclists”.
Researchers then found 130 people to make up a second group. Within this group, 75 people were aged from 57 to 80. The other 55 were between the ages of 20 to 36. The people in this group were also healthy, but they didn’t exercise regularly. We will call this group the "non-exercisers". Smokers, heavy drinkers of alcohol (酒) and people with other health problems were not included in the study.
Then, researchers gave both groups a series of tests. They tested their muscle mass (肌肉质量) , muscular strength, percentages of body fat and the strength of their immune systems (免疫系统). Then the researchers compared the results of the two groups.
Results showed that the cyclists didn’t experience body changes usually regarded as a normal aging process. For example, they didn’t lose muscle mass or muscular strength. Also, their body fat didn’t increase with age. The researchers also found something they had not expected. The study showed that the immune systems of the cyclists didn’t age either. The researchers advise us all to find an exercise that we like in our lives.
1. How did the researchers carry out the study?| A．By listing lots of example. |
| B．By reasoning the possible results. |
| C．By discussing people’s different habits. |
| D．By comparing two groups of subjects (调查对象). |
| A．Smokers could also join in the study. |
| B．People taking part in the study were all healthy. |
| C．The “cyclists” group included 130 professional cyclists. |
| D．The “non-exercisers” group were between the ages of 57 and 80. |
| A．The non-exercisers put on weight easily. |
| B．The cyclists had a normal aging process. |
| C．The cyclists’ immune systems changed little. |
| D．The non-exercisers’ immune systems were easy to break down. |
| A．Healthy People Need More Exercise |
| B．Take an Exercise — the More, the Better |
| C．A Lifetime of Exercise Slows Down the Aging Process |
| D．Cycling Is the Best Way to Slow Down the Aging Process |
