首页
登录
职称英语
[originaltext] Sales of laptop computers passed desktops in the U. S. for th
[originaltext] Sales of laptop computers passed desktops in the U. S. for th
游客
2023-09-01
36
管理
问题
Sales of laptop computers passed desktops in the U. S. for the first time ever this fall, according to market-research firm IDC. But that’s bad news for backs, necks and shoulders. "Theoretically, laptops are not healthy for human bodiesunless you’re 2 feet tall," says physician Norman J. Marcus, a muscle-pain specialist in New York City.
(26) When you work at a computer, the keyboard should be at elbow height, so your upper and lower arms form an angle of 90 degrees or more and your forearms are supported by armrests. The monitor should be roughly at eye level so you can lean back in a chair with back support. But most users simply set their laptops on a desk or table. The keyboard is too high, which makes your arms reach up, your shoulders hunch and your wrists bend down. The monitor is too low, which pulls your head and neck forward and down and puts a strain on your back.
That’s OK if you use your laptop occasionally, for short periods. (27)But if you use one for hours at a stretch--as do millions of college students, business travelers, telecommuters, video-garners and growing numbers of office workers--you’re setting yourself up for muscle problems that can make your entire upper body hurt.
A wrong position can cause pain and stiffness in the neck, shoulders, back and arms, as well as headaches. (28) There are simple ways to make a laptop healthier. And the key is to separate the keyboard and the monitor, so each can be placed at the proper height.
选项
A、College students, business travelers and professors.
B、College students, video-gamers and office workers.
C、Business travelers, telecommuters and professors.
D、Telecommuters, video-gamers and office workers.
答案
D
解析
文章中提到一般人都把笔记本电脑放在桌子上使用,如果只是暂时地用一下,那么就没关系,但是对于那些长时间坐在电脑前的人群来说,如大学生、商人、利用网络在家工作的人、游戏玩家和上班族,这是非常不利于健康的。故本题答案为D。
转载请注明原文地址:https://tihaiku.com/zcyy/2975729.html
相关试题推荐
[originaltext]WhenMidoriwastwoyearold,sheoftenclimbedontothepiano
[originaltext]WhenMidoriwastwoyearold,sheoftenclimbedontothepiano
[originaltext]Recently.amanwhowasalwaysi13goodhealth,spentaweek
[originaltext]Recently.amanwhowasalwaysi13goodhealth,spentaweek
[originaltext]Climateresearchersstilldonotagreeonwhethertheearth
[originaltext]Climateresearchersstilldonotagreeonwhethertheearth
[originaltext]W:I’mgoingtoleaveworkearlytoday.There’sadebatethiseve
[originaltext]M:Hello.W:Hello,John.Thisis.FlorenceRichardson.I’msorry
[originaltext]M:Doyouhaveanyideawhathappenedtotheuser’smanualforth
[originaltext]M:Doyouhaveanyideawhathappenedtotheuser’smanualforth
随机试题
Oneofthethingsyoungpeoplefindirritatingislisteningtotheirparents
Bysaying"thewomansaidshefoundmyfaceachallenge"(Para1),theauthorsug
I’veneverbeenabletoworkherout.Theunderlinedpartmeans______.A、toWork
罗女士,30岁。3天来发热、咳嗽,极度乏力,全身皮肤广泛点片状出血,急诊入院。实
某公司承接了地铁3号线二期工程土建标段。2020年3月7日,一标段02工区的2号
男性,30岁。反复发热、上呼吸道感染、周身乏力2个月,拟诊为急性白血病,行骨髓检
下列国家或地区,房地产经纪行业管理采用行政监管模式的有()。A.日本 B.
下列关于蒙代尔一弗莱明模型的说法,错误的是()。A.财政政策在浮动汇率下对
社会基本矛盾的运动总是从( )的变化开始。A.经济基本 B.上层建筑 C.
工程施工过程中,质量事故处理的基本要求有()。A.安全可靠,不留隐患 B.满足
最新回复
(
0
)