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PROTECTING EYES FROM COMPUTER SCREENSMany of us spend the bulk of the day looking at com

PROTECTING EYES FROM COMPUTER SCREENS

Many of us spend the bulk of the day looking at computer screens. Reading this article means there’s a good chance you’re looking at one right now.

But does looking at computer screens damage your eyes? Professor Nathan Efron does not consider computer screens “harmful” to our eyes.

But he admits if you use one a lot, you increase your risk of becoming slightly more short-sighted –where your eyes focus well only on close objects while more distant objects appear blurred. This is especially the case for children and young adults, whose eyes are still developing.

In the shorter term, prolonged viewing of a computer screen can make any slight existing vision defects more noticeable. It can also give you what is sometimes known as “computer vision syndrome” – eye strain, headaches, gritty eyes and blurry vision. But this is only temporary and can be minimized by:

Adjusting the screen display so the contrast is high and the brightness feels comfortable.

Having lighting that does not produce glare on the screen.

Giving your eyes regular rests from looking at the screen (The Optometrists Association of Australia recommends you do this for five to ten minutes every one to two hours of computer use. It's a good time to make phone calls or do other tasks.)

1. Many of us spend much time looking at computer screens. {T; F}

2. Looking at computer screens for long time doesn’t damage children and young adults’ eyesight. {T; F}

3. Computer vision syndrome cannot be weakened. {T; F}

4. It’s good taking breaks during screen watching. {T; F}

5. Proper lighting is important to protect our eyes. {T; F}

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更多“PROTECTING EYES FROM COMPUTER …”相关的问题

第1题

______ may be used for ______ our eyes from the sunshine.A.Sunglasses; protectB.Sunglass;

______ may be used for ______ our eyes from the sunshine.

A.Sunglasses; protect

B.Sunglass; protecting

C.Sunglasses; protecting

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第2题

Computer()focuses on protecting information ,hardware ,and software from unauthorized us
e and damage.

A.network B.virus C.security D.architecture

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第3题

Most computer users have symptoms of CVS because of ______.A.dry, red, or burning eyes and

Most computer users have symptoms of CVS because of ______.

A.dry, red, or burning eyes and blurred or double vision

B.glare, poor lighting and improper workstation setup

C.not keeping their monitor two feet away from them

D.not using a computer that protects their eyes

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第4题

Computer () focuses on protecting information,hardware,and software,and software from una
uthorized use and damade.

A.network B.virus C.security D.architecture

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第5题

is a mechanism used for protecting the users outside of network from accessing some no
n-authorized computer resources.

A.Router

B.Network Card

C.Firewall

D.protocol

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第6题

is a mechanism used for protecting the users outside of network from accessing some n
on-authorized computer resources.

A.Network Card

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C.firewall

D.Router

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第7题

is a mechanism used for protecting the users outside of network from accessing some no
n-authorized computer resources.

A.Network Card

B.protocol

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D.Router

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第8题

is a mechanism used for protecting the users outside of network from accessing some no
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第9题

is a mechanism used for protecting the users outside of network from accessing some no
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A.Router

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第10题

The passage tells us that it will cost far more to repair an old computer than to______.A.

The passage tells us that it will cost far more to repair an old computer than to______.

A.buy a new one

B.buy a new car

C.repair an old car

D.build a car from spare parts

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