Dangers of Using Computer Terminals Undoubtedly, the
computer has greatly increased human being’s working capacity and intellectual
capacity, but it also poses dangers to its users. The problems
caused by the use of computers: a. more frequent incidence of
abnormity during (1) ______
(1) ______ b. increased stress and
(2) ______to vision, worsening short, sight
(2) ______ and an itching of the face. To solve this problem, one
should take a rest from time to time and place computers at a location where
there is (3) ______ (3) ______ light and
something else to look at. c. constipation resulting from long
periods of sedentary (4) ______ (4)
______ d. (5) ______due to crouching over an inconveniently
positioned (5)
______ keyboard. e. a sense of (6)
______owing to having puzzled over a problem too
(6) ______ long.
Precautions computer users are advised to take: Firstly,
to make sure that there is an alternative source of light from that of the
(7) ______itself.
(7)
______ Secondly, to rest their eyes frequently.
In addition, to make sure the screen is properly (8) ______
(8) ______
Finally, to make sure that you are sitting in a comfortable position,
to get up (9) ______and go out into the fresh air occasionally. Sitting still
for (9) ______ hours is likely to cause thrombosis and (10)
______
(10) ______