1 . More than a quarter have to enlarge the font size on their mobile phone so they can read it clearly.     1     Meanwhile, 28% regularly squint (眯眼看) at the screen. And all of them are signs of eye disorder.

“The research has shown our eyes are not designed to be fixed on a single object for a long time, especially smaller laptops or smart devices.     2     Even worse, staring at the screen constantly can lead to dry eye syndrome,” says Giles Edmonds, a clinical service director.

Dry eye syndrome is a condition where the eyes do not make enough tears, or the tears evaporate too quickly. Here are some simple solutions to prevent eye strain and irritation, and preserve your eye health overall.

Rest your eyes.

Follow the 20:20:20 rule, looking up from your screen every 20 minutes and look at something 20 feet away for at least 20 seconds.     3     It in turn reduces eye tiredness.

Adjust your workstation.

Change your screen settings to ensure that the brightness and contrast are balanced correctly, as well as making fonts larger. Also, be mindful of how your workstation is positioned. Adjust your screen ensuring it is 15 — 20 degrees below eye level and around 50 — 70 cm away from the eyes.     4    

Reduce glare (眩光).

    5    . Try reducing this by attaching an anti-glare screen to your monitor or laptop to avoid external light shining onto the screen. Glasses wearers can also have lenses treated with an anti-glare coating.

A．People should try to reduce the time spent on the screen.

B．One can read his favorite paper books instead of e-books.

C．Half confess they’re forced to enlarge images to see them clearly.

D．Another thing to focus on is to make sure your room is properly lit.

E．Looking into the distance helps relax the focusing muscles of your eyes.

F．Reflections on your computer screen can cause glare and lead to eye fatigue.

G．They may feel uncomfortable, painful, tired and even start to itch (发痒) or burn.

2 . You may not get enough physical activity throughout the day, especially since sitting still is required or encouraged in many jobs, at school, and in social situations. But there’s something you should know. Being physically inactive or sedentary (久坐不动的) can increase health risks.     1    

What counts as being physically inactive?

While there is no strict definition of what can be considered a sedentary lifestyle, researchers have a few different measures to assess what a sedentary lifestyle is. One measure is the time an individual spends seated or reclining (向后倚靠) during waking hours.     2     Some other researchers label people inactive or sedentary if they take fewer than 5,000 pedometer (计步器) steps per day.

    3    

In the short term, being inactive can increase depression or anxiety. It can also affect the way the body processes fats and sugars in the diet and lead to some weight gain if you aren’t burning enough calories. Over the long term, sedentary lifestyles increase the risk of death from cardiovascular (心血管的) disease, diabetes, and cancer.

How can you prevent being inactive?

Health authorities recommend exercise at a medium level for either 30 minutes a day for five days a week or a total of 2 hours and 30 minutes per week. Walking is an easy activity to add to your day.     4     A pedometer or fitness band can show you whether you are getting enough steps. Many people aim to take 10,000 steps per day, which indicates that you have met your daily physical activity goal.     5     but the value of being more physically active is worth it for its many benefits.

A．How harmful is it?

B．What’s the drawback of sedentary lifestyle?

C．Fixing a sedentary lifestyle takes some conscious effort at first,

D．Now let’s learn about whether you might be classified as inactive or sedentary.

E．Simply walking more or doing household chores positively impacts health,

F．It can work to break up sitting time and add steps hourly throughout the day.

G．Spending four to six waking hours sitting or lying down is considered sedentary.

4 . 阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写1个恰当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。

Some people are living very long lives. What are some of their secrets to longevity?     1    (eat) the right food plays a big role. Exercise is also important. A study found that people who exercised at     2    (recommend) levels gained 3-4 years of life compared to those     3     were inactive. In addition, there is also a link between happiness and lifespan — happy people with a positive outlook on life tend to live     4    (long) and experience better health than their unhappy peers.

6 . 阅读下面短文，根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。

Your teeth may be part of your smile,     1    they have a more important job — they are the first step in the process of digestion. You have three     2    (kind) of teeth. In the very front of your mouth are eight flat, thin teeth called incisors. They are used for cutting and biting food. Next to these are pointed teeth called canines,     3     also help you tear food. The remaining teeth are molars. These teeth have flat tops for crushing and grinding the food.

9 . In the dead of winter, we don’t typically think about spending time outdoors, but according to many physicians we should. The sun is our greatest source of a vitamin that is essential for good health — vitamin D.

This important nutrient (营养素) strengthens bones and teeth and is linked to the prevention of heart disease, cancer and many other life-threatening diseases.

The recommended daily requirement is 400-600 IU. In summer, people with dark brown eyes and darker skin convert sunlight from just 15 minutes outside without sunscreen into adequate amounts of vitamin D.

Even during winter, just a 10-minute walk midday can keep the body’s vitamin D at healthy levels. During brief winter walks, we receive the greatest benefits when we wear no sunscreen and expose as much skin to the sun as

possible.

Vitamin D can also be obtained from foods. Salmon is one of the best sources of the vitamin. Egg yolks, cheese, mushrooms and beef liver contain smaller quantities of it.

To attract consumers, food companies add vitamin D to some of their milk products. The practice of putting the vitamin into milk began in the 1930s. At that time, many children were suffering from rickets, an illness that is caused by a vitamin D deficiency (不足). It made the children’s bones soft and weak. Adding Vitamin D to milk helped to solve the problem, and it has been available ever since.

For people who still need more vitamin D, there is another option: take vitamin D supplements. These products are widely sold in stores. However, anyone considering taking supplements should consult a physician first.

1. What is the main purpose of this article?

A．To note risks associated with a nutrient.

B．To analyze a nutrient’s composition.

C．To introduce a valuable nutrient.

D．To explain how a nutrient was discovered

2. What does this article imply about people during the winter months?

A．They aren’t able to meet their deadlines.

B．They often don’t dress warmly enough.

C．They generally tend to remain indoors.

D．They leave lots of work for others to do.

3. According to this article, what should people avoid doing with their skin to get the most benefit?

A．Washing it with harsh cleaners.

B．Scratching it to relieve an itch.

C．Allowing it to become extremely dry.

D．Covering it with protective lotion.

4. How does the article define rickets?

A．As a revolutionary drug.	B．As a health problem.
C．As an economical treatment.	D．As a mental disorder.