Sales of laptop puters passed desktops in the U.S. for the first time ever this fall, according to market-research firm IDC. That's bad news for backs, necks and shoulders.
Laptops are bad for our body. When you work at a puter, the keyboard should be at elbow height and the monitor should be roughly at eye level, so you can sit well in a chair. 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 feel tired and your wrists bend down. The monitor is too low, which pulls your head and neck forward and down and your back may feel hurt.
That's OK if you use your laptop for a short time. But if you use one for hours without stopping – as do millions of college students, business travelers, telemuters, video-gamers and growing numbers of office workers – your body may feel hurt. Ergonomics experts have warned about laptop problems for years. But people still like laptops better than the desktops. And they use laptops anywhere – in bed, on the floor – in all kinds of positions.
“How can a mouse or a keyboard hurt you?” says Thomas Caffrey, the founder of Myofactors LLC, “Wrong positions can be bad for your body. As time goes by, a wrong position can lead to pain in the neck, shoulders, back and arms, as well as headaches.”
【小题1】When you work at a puter, the keyboard should be .A．at elbow heightB．at eye heightC．on a deskD．on a table【小题2】The writer asks us not to use the laptop .A．for a short time B．to play video gamesC．for hours without stopping D．to buy things on the Internet【小题3】From the passage, we know that laptop puters .A．are not so popular as the desktopsB．are more popular than the desktopsC．are not bad for our bodyD．have no mouse now【小题4】Using a laptop in a wrong position may make . A．people’s sight lowerB．people have cancerC．people’s arm longerD．people feel pain in the body【小题5】According to the passage, which of the following is NOT true?A．When you use a laptop, you should put your monitor at eye height.B．Laptop puters sold more than desktops this autumn.C．To keep healthy, you should use laptop puters.D．Business travelers often use the laptop puters for a long time.A
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(答案→)A
解析：
试题分析:
【小题1】细节理解题，根据文中语句“When you work at a puter, the keyboard should be at elbow height and the monitor should be roughly at eye level, so you can sit well in a chair.”理解可知。用电脑时，键盘和胳膊肘应该是一般高，故选A。
【小题2】细节理解题，根据文中语句“That's OK if you use your laptop for a short time. But if you use one for hours without stopping – as do millions of college students, business travelers, telemuters, video-gamers and growing numbers of office workers – your body may feel hurt.”理解可知。用手提电脑短时间是可以的，但长时间会对人体有害，故选C。
【小题3】细节理解题，根据文中语句“Ergonomics experts have warned about laptop problems for years. But people still like laptops better than the desktops.”理解可知。手提电脑比台式电脑流行的多，故选B。
【小题4】细节理解题，根据文中语句““Wrong positions can be bad for your body. As time goes by, a wrong position can lead to pain in the neck, shoulders, back and arms, as well as headaches.””理解可知。错误的姿势可能给身体带来伤害。
【小题5】理解归纳题，根据文中语句理解可知。常用手提电脑对身体非常有害，故选C。