中考英语阅读理解专项训练天天练（一）
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1.(本小题20分)
阅读理解
Eyes are important in our everyday life. We use them to read books, see colors and the wonders of the world. But sometimes, we use them too much and it hurts them.
In the past, nearsightedness(近视眼)was a common eye problem among children. This is mostly because of their bad eye habits, such as watching TV too long and reading books in bed.
However, today’s technology is changing the way we live. Children spend more time working and playing in front of computers, smartphones (智能手机)and tablets (平板电脑).
This has caused a new problem for our eyes: digital eyestrain, People with digital eyestrain may get headache, dry and red eyes, eye pain, watering and other eye problems.
But don’t worry. The following advice can help you avoid digital eyestrain. Try them out.
◆When using a computer, first sit in your chair and extend (伸展)your arms in front of you. Your palm (手掌)should rest comfortably on the screen.
◆When you are using mobile phones, keep them at least 30cm from your eyes. Try not to use your smartphone in direct sunlight.
◆Blink (眨眼) more often when you are looking at the screen. This can help you stop dry eyes.
◆Remember to take a 20-20-20 break: every 20 minutes, take a 20-second break and look at something 20 feet (about 6 meters) away.
◆Spend less time in front of screens. One to two hours a day is OK for your eyes.
In the past,children got nearsightedness because they .
核心考点: 阅读理解
