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
45
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、The rapid development of laptops.
B、The benefits of having a laptop.
C、Right position before a laptop.
D、How to keep a laptop run efficiently.
答案
C
解析
文章首先提到笔记本电脑的销量在美国超过了台式电脑,但是笔记本电脑却不符合人体工程学,随之介绍了正确的坐姿,并说明了错误的姿势对人体会造成怎样的伤害。故本题答案为C。
转载请注明原文地址:http://tihaiku.com/zcyy/2975728.html
相关试题推荐
[originaltext]Whatarethezebrastripesonthetomatosoupcansandpotato
[originaltext]Whatarethezebrastripesonthetomatosoupcansandpotato
[originaltext]Whatarethezebrastripesonthetomatosoupcansandpotato
[originaltext]M:Mathdepartment,ProfessorWebsterspeaking.W:Hello,Prof.W
[originaltext]M:Mathdepartment,ProfessorWebsterspeaking.W:Hello,Prof.W
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
随机试题
Ifyou’reoneofthosepeoplewhotendstoputonweightaroundyourmiddle,
Juicemaybetasty,butit’snotreallythatnourishing.Whileorangejuice
在字母转换实验中,给被试呈现“EGBK+3”,则被试的正确回答应该是()A.
采用超声回弹综合法检测混凝土强度,超声测试的方式不包括()。A.斜测法
关于联合体投标需遵循的规定,下列说法中正确的是( )。A.联合体各方签订共同投
《国民旅游休闲纲要》规定:到2025年,职工带薪年休假制度基本得到落实。
下列方剂中含有烧生姜的是A.再造散B.桑杏汤C.大承气汤D.逍遥散E.左归丸
下列关于存货监盘的表述,正确的是:A:如果被审计单位已定期进行存货盘点,审计人员
62、十九大报告指出,改革全面发力、多点突破、纵深推进,着力增强改革(),
从洋务运动到五四运动前后,近代化在中国曲折发展。在中国近代化的发展历程中,下列口
最新回复
(
0
)