【题目】 Are your eyes irritated, dry, watery, blurry, seeing double or sensitive to light, and do your back and neck ache? If so, you are likely one of many people today who suffer from digital eyestrain, also called computer-vision syndrome.

Eyestrain is often related to the amount of exposure to screens, the distance from eyes to screens and the use of multiple screens simultaneously. However, studies have also shown that the blue light produced by digital devices today reaches further into the eyes than other kinds of light. This light actually assists attention during the day but can result in interrupted sleep patterns at night.

Scientists have also said that eyestrain is not a necessary evil, even in a modern world that revolves around technology. Changing some simple details about your relative position to screens, such as staying about 60 centimeters away, will help. Also, avoid overhead and other direct sources of light, and use shaded lamps and window blinds while looking at digital devices instead.

Beyond the way that relates to digital screens, there are also ways to change how you view screens that are helpful in combating eyestrain. To begin with, your computer screen should be high-resolution(高清的), at least 50 centimeters wide diagonally and may require a screen filter to decrease reflections. Also, be aware that “computer glasses”, which cut down glare and blue light, are available and those contact lenses can increase the risk of eyestrain.

Besides, to reduce your risk for computer-vision syndrome and neck, back and shoulder pain, take frequent breaks during your computer workday. Many workers take only two 15-minute breaks from their computer throughout their day. According to a recent study, discomfort and eyestrain are significantly reduced when computer workers take four additional five-minute “mini-breaks” throughout their workday. And these additional breaks don’t reduce the workers’ productivity.

Finally, many of us fall into bad habits while using digital screens that only worsen the effects of eyestrain. While viewing digital screens, many people blink one third less often than they usually do. Place a reminder on your computer to “blink” so that your eyes don’t dry out. Also, rest your eyes’ focusing muscles by using the 20-20-20 rule: Every 20 minutes, focus on something 20 feet away for 20 seconds.

1What is Paragraph 2mainlyabout?

A. The dangers of eyestrain.B. The causes of eyestrain.

C. The symptoms of eyestrain.D. The effects of eyestrain.

2Which of the following ways might not be helpful in relieving eyestrain?

A. Employing blue light.B. Breaking bad habits.

C. Adjusting your position.D. Changing your hardware.

3It can be inferred from the passage that .

A. overhead lights make the eyes less tired

B. taking frequent breaks reduces eyestrain

C. people tend to blink more often at a computer

D. technology and eyestrain unavoidably go hand in hand

4Which of the following shows the structure of the passage?

A. B.

C. D.

【题目】This Tiny Box Will Help You Relax In Terrible Summer Heat!

Traditional Air Conditioners (AC) are outdated.They cost a lot to install and even more to run. They are huge, noisy, and dangerous to clean.You can't move them around the house with you or take them outside! Thousands of people are now using a much cheaper alternative to cool themselves in the heat and clean their personal air. With over million units sold worldwide, this device is becoming one of the most successful gadgets of 2019. EVERYONE wants this awesome looking box for summer!

What Are We Talking About?

Meet the new AirFreez, an innovative alternative to AC that cools you just the same! lt's a perfect solution for those very hot days and nights! The AirFreez was designed by two Swiss engineers who were fed up suffering the hot summers.They realized that AC units are super inefficient and cost a lot of money to use.The engineers also discovered that none of the traditional AC units were made to travel with.

So, they designed this light-weight, portable Air Cooling box. It uses a very small amount of electricity and all without sacrificing any of the main benefits of a top AC model! It's tiny, easy to use and it can cool you in seconds!

What Is So Special About This Little Box?

The main benefits of AirFreez are its portability and price.

It is no larger than a lunchbox. Besides, it can be powered by a pocket solar panel or battery pack and you probably have the world's most portable AC unit.

And There Is One More Thing. The price is just amazing. Most AC units cost at least $300+ AND you have to pay for installation PLUS cover the expensive electricity bills each month.

AirFreez costs lens than $100 (Actually $53 for each if you buy more than one here). No messy installation, no expensive electricity bills. Far a Cooling unit of this quality, this must be the single best price-quality AC unit there is!

How Can You Get An AirFreez?

Now that you are aware of this amazing new invention, here is how to get one — order it from the Official Website for BEST PRICE.

1Which of the following words can best describe AirFreez?

A.Smart but fragile.

B.Costly but multi-functional.

C.Foldable and durable.

D.Handy and energy-saving.

2What can we learn about AirFreez?

A.lt costs less than $53.

B.It requires no complex installation.

C.It doesn't consume electricity.

D.It is a little larger than a lunch box.

3What is the purpose of this passage?

A.To advertise Airfreez.

B.To explain the functions of AirFreez.

C.To introduce the inventors of AirFreez.

D.To compare AirFreez with traditional AC.

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