Many people have to use a computer for hours every day. To prevent* possible health problems, this guide offers some advice by asking and answering questions.
Q1: I know it would cause pains to the eyes if the viewing distance is too short. What is the recommended viewing distance?
A: The viewing distance between the user’s eyes and the screen should be around 35 to 60 cm.
Q2: I have to use a notebook computer all the time. I have developed some pains in my fingers and hands. What can I do?
A: The small size of the keyboard is likely to cause pains in fingers and hands. It is recommended that a larger keyboard can help reduce the pains if a notebook has to be used for long hours.
Q3: I have burning eyes after working on the computer for a few hours. What should I do?
A: To make your eyes more comfortable, a short break (5-15 minutes) taken after 1-2 hours computer work is recommended. During the break, the computer user may get up and go to see faraway objects.
Q4: I often develop pains in my neck after using a computer for a long time. Would you recommend some simple physical exercises?
A: You may repeat the following exercises several times during a break.
(1) Turn your head slowly forward.
(2) Hold for 5 seconds.
(3) Turn the head to one side and hold for 5 seconds.
(4) Repeat for the other side.
(5) Swing the head to the left and hold for 5 seconds.
(6) Repeat for the other side.
19. A larger keyboard can help reduce pains in your __________.
A.eyes | B.neck | C.head | D.fingers |
20. According to this guide, who uses a computer in an unhealthy way?
A.The viewing distance between Mike’s eyes and the screen is about 50 cm. |
B.Betty uses a large keyboard when she works on the computer for a long time. |
C.Tina has been working on the computer for about five hours without a break. |
D.Jim repeats simple physical exercises after using a computer for a long time. |
21. According to the answer to Question 4, what is the correct order of the following four pictures?
①
②
③
A.③→①→② | B.②→③→① | C.②→①→③ | D.③→②→① |
22. This guide mainly tells people how to_________.
A.finish work quickly on the computer |
B.keep healthy and happy while working |
C.protect our eyes while using the computer |
D.stay healthy while using the computer for hours |