__3__

　　Staring at a computer screen can cause so many problems: dry eyes，headaches and neck，back and shoulder pain.To protect your eyes，you can position your computer so that your eyes are level with the top of the monitor.This allows you to look slightly down at the screen.Try to avoid glare on your computer from windows and lights.Use an anti－glare screen if needed.Every 20 minutes，rest your eyes by looking 20 feet away for 20 seconds.__4__ Visit your eye doctor regularly.

　　Everyone，even young children，should get their eyes examined regularly.__5__

　　They can also find some eye diseases，such as glaucoma (青光眼)．The earlier diseases are found，the easier they are to be treated.

　　A．Use safe eyewear.

　　B．Look away from the computer for good eye health.

　　C．Eye exams help you protect your sight and see your best.

　　D．Regularly eating nutritious foods can lead to good eye health.

　　E．Wear glasses when examined under the guidance of your doctor.

　　F．At least every two hours，get up and take a 15－minute break.

　　G．The right kind of sunglasses will help protect your eyes from the suns ultraviolet(紫外线的)rays.

　　答案　1.D　[本段关于怎样通过饮食保护视力，所以本空只能选择D项有关营养食品对眼睛健康的。]

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