17.A.changing B.a(chǎn)vailable C.exposure D.worsen E.sensitive
F.density G.rest H.shaded I.refleciions J.interrupted K.fighting

Are your eyes dry,watery,seeing double or (31)E to light,and do your back and neck ache?If so,you are likely one of many people today who suffer from digital eyestrain(視疲勞)also called computer-vision syndrome.
Eyestrain is often related to the amount of (32)Cto screens,the distance from eyes to screens and the use of multiple screens at the same time.However,studies
have also shown that the blue light produced by digital devices reaches further into the eyes than other kinds of light.This light actually assisis attention during the day but can result in (33)J sleep patterns at night.
Scientists have stated that eyestrain is not a necessary evil,even in a modern world that circles around technology.Sometimes (34)Asome simple details about your relative position to screens,such as slaying about 60 centimeters away,will help.Also,avoid overhead and other direct sources of light,and use (35)H lamps and window blinds while looking at digital devices instead.
Beyond the ways that you relate to digital screens,there are also ways to change how you view screens that are helpful in (36)K eyestrain.To begin with,your computer screen should be high-resolution (高分辨率),and may require a screen to decrease(37)I.Also,be aware that''computer glasses,"which cut down glare(刺眼的光} and blue light,are (38)B on the markect.
Finally,many of us fall into bad habits while usiug digital screens that only(39)D the effects of eyestrain.When viewing digital screens,many people blink (眨眼) one third less often than they usually do.Place a reminder on your computer to"blink!"so that your eyes don't dry out.Also,(40)G your eyes'focusing muscles by using the 20-20-20rule:every 20minutes,focus on something 20 feet away for 20 seconds.
There are many other methods used to help relieve eyestrain,so find what works for you rather than giving in to tired vision.

分析 很多人都有視疲勞,文章給出了幾條建議來對抗視疲勞.

解答 31-40  E C J A H K I B D G
31.E 考查形容詞.根據(jù)前面的 eyes dry,watery,seeing double 可知,這些都是computer-vision syndrome癥狀,所以be sensitive to light意思是對光敏感也是表現(xiàn)之一.
32.C 考查名詞.句意為 digital eyestrain和長期眼睛暴露在電腦屏幕前有關(guān)系.exposure to暴露于…
33.J 考查非謂語.此處interrupted是過去分詞形式做定語,修飾sleep patterns,表示被動,意思是被擾亂的睡眠模式.
34.A 考查非謂語.此處所填部分是句子的主語,所以需要用動名詞形式,即changing,意思是改變你對著電腦的位置.
35.H 考查非謂語.shaded是過去分詞形式,修飾lamps意思是被遮陰的燈.
36.K 考查動名詞.前面內(nèi)容提到對抗eyestrain的方法,此處there are also ways 暗示還 有其他的方法對抗視覺疲勞,in是介詞,所以后需用動名詞形式.
37.I 考查名詞.根據(jù)your computer screen should be high-resolution 電腦增加分辨率是為了減低輻射.
38.B 考查形容詞.此處考查固定短語 be available for可得到,可利用.
39.D 考查動詞.句子里many of us fall into bad habits 是主語,這樣的 一些壞習(xí)慣會惡化視疲勞的影響.
40.G考查動詞.此處rest是動詞,使…休息,句意為使你的眼睛得到休息.

點評 在做選詞填空題時,很重要的一點就是要確認(rèn)空格處所要填的詞的詞性,然后根據(jù)句子的法則,也是就是句法來判斷所要填的詞.

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