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Passage 22
Some say it is evident that computers can damage a person’s eyesight. Since the popularity of computers began to skyrocket, there have been questions _1_ with computer screens and eye strain. There are plenty of symptoms that often show up as a result of eye strain from computer screens. It may first start with a little _2_. Then, it may progress to dry eyes, _3_ vision and even headaches. However, the extent to which computer screens damage eyesight is _4_ unclear.
Taking a ten to 15 minutes' break every hour while working is a good way to help avoid this and rest your eyes, though your _5_ may not be as generous with your break periods. If possible, break up computer tasks and non-computer tasks throughout the day as much as possible.
One of the major improvements in computer screens has also helped Still, even an LCD screen, if it is not adjusted _6_ or if it is too bright, can be just as hard on the eyes. This is very important as many people tend to keep their LCD screens too bright, simply because they are not viewing them from a proper angle and may be trying to _7_ for the “screen door” effect.
Fortunately, most of the eye damage, if it is to be called that, resulting from the use of computer
screens tends to be a __8__ situation. Once the eyes are rested long enough, the symptoms tend to quickly go away. However, if the eyes are not _9_ rested, the symptoms may return quicker than they appeared at first once computer activities _10_.
A) somewhat B) principal C) temporary D) vulnerable
E) soreness F) properly G) sufficiently H) whereby
I) compensate J) employers K) associated L) prospect
M) blurred N) proceeded O) resume
n. 屏，幕，银幕，屏风
v. 放映，选拔，掩
