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to market research firm IDC.
That' s bad news for backs, necks and shoulders.
"Laptops are basically not designed based on human bodies-unless you' re 2 feet tall," says physician
Norman J. Marcus, a muscle (肌肉 ) specialist in New York City.
When you work at a computer, the keyboard should be at elbow height, so your upper and lower arms
form an angle (角度) of 90 degrees or more. The monitor (显示器) should be at about eye level so you can
rest 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 rise and your wrists (手腕) bend down. The monitor is too low, which pulls
your head and neck forward and down and this may hurt your back.
That' s OK if you use your laptop occasionally, for short periods. But if you use one for hours without
stopping-as do millions of college students, business travelers, video-gamers and growing numbers of office
workers-you' re setting yourself up for muscle problems that can make your entire upper body hurt.
Experts have warned about laptop problems for years-but without success. People continue to abandon
large and heavy desktops in favor of the smaller and lighter laptops. And WiFi (无线局域网 ) connections let
us use laptops anywhere-in bed, on the floor-and in all kinds of positions.
B. muscle pains are mainly caused by laptops
C. laptops are not suitable for people of usual height
D. laptops cause a lot of diseases easily
B. there are no suitable places for laptops
C. we shall buy desktops instead of laptops
D. desktops will face a hard future
B. People pay little attention to the risks of laptop use.
C. Most people use laptops more often than desktops.
D. Laptops bring people more disadvantages than advantages.
B. tell us people prefer laptops to desktops
C. persuade people not to use laptops any more
D. warn people of health problems caused by laptops
If you are a Lefty , then Left Handers Day is just for you !
The world is built for right handers. In school, have you ever seen a left handed desk ? They don’t exist . Many left handed items cost more . The computer mouse is designed for right handers . Scissors for right handers . Only a lefty would understand this .
But do you know that right handed people operate in the left side of the brain . Left handed people use the right side . Therefore, only left handed people are in their right mind .
Left Handers certainly earned the right to have a day special for them . This special day was first declared and celebrated on Friday , August 13, 1979 by an organization called Lefthanders International . They chose to open their business on that day to address the myths and misconceptions about left-handers . They published a magazine for left-handers and they sold left-handed products for more than twenty years before going out of business a few years ago. The holiday is celebrated annually on the 13th of August .
But Left-handers Day is not merely a celebration of the creative superiority of lefties , it also aims at raising awareness of the difficulties presented by a right-handed world . This is a day for left-handers to show their pride and pay tribute to famous left-handers past and present , including some of our greatest artists , athletes and entertainers . Furthermore , this day is to praise the creativity and talents of those left-handers who are less famous but equally productive members of our society .
So take a minute to appreciate your left handed friends and loved ones . Don’t forget to send them a Left Handed Day E-card to show your respect . Remember that “Leftis have rights!”
64．Why does the writer say, “The world is built for right handers”?
A．Because left-handers aren’t paid enough attention to .
B．Because the number of right-handers is larger than that of left-handers in the world .
C．Because there are no special products for left-handers .
D．Because right-handers didn’t like International Left-hander’s Day .
65．From the passage , we can infer that .
A．International Left-hander’s Day was first declared and celebrated in 1979
B．there was once a magazine for left-handers
C．more and more people will use their right hands
D．a lot of people think doing things with right hands is reasonable
66．Which statement is not included in the passage ?
A．There are many famous left-handed artists , athletes and so on in the past and at present .
B．All left-handers are proud of themselves .
C．Relatively , left-handers have more difficulties to overcome than right-handers .
D．a lot of ordinary left-handers can also make great contributions to society .
67．The best title of this passage is .
A．International Left-hander’s Day B．Right Handers Should Respect Left Handers
C．Lefties Have Rights D．Left Handers , Right ?
查看习题详情和答案>>If you are a Lefty, then Left Handers Day is just for you!
The world is built for right handers. In school, have you ever seen a left handed desk? They don't exist. Many left handed items cost more. The computer mouse is designed for right handers. Scissors for right handers. Only a lefty would understand this.
But do you know that right handed people operate in the left side of the brain. Left handed people use the right side. Therefore, only left handed people are in their right mind.
Left Handers certainly earned the right to have a day special for them. This special day was first declared and celebrated on Friday, August 13, 1979 by an organization called Lefthanders International. They chose to open their business on that day to address the myths and misconceptions about left-handers. They published a magazine for left-handers and they sold left-handed products for more than twenty years before going out of business a few years ago. The holiday is celebrated annually on the 13th of August.
But Left-handers Day is not merely a celebration of the creative superiority of lefties, it also aims at raising awareness of the difficulties presented by a right-handed world. This is a day for left-handers to show their pride and pay tribute to famous left-handers past and present, including some of our greatest artists, athletes and entertainers. Furthermore, this day is to praise the creativity and talents of those left-handers who are less famous but equally productive members of our society.
So take a minute to appreciate your left handed friends and loved ones. Don't forget to send them a Left Handed Day E-card to show your respect. Remember that "Lefties have rights!"
1． Why does the writer say, "The world is built for right handers"?
A. Because left-handers aren't paid enough attention to.
B. Because the number of right-handers is larger than that of left-handers in the world.
C. Because there are no special products for left-handers.
D. Because right-handers didn't like International Left-hander's Day.
2． From the passage, we can infer that______.
A. International Left-hander's Day was first declared and celebrated in 1979
B. there was once a magazine for left-handers
C. more and more people wilt use their right hands
D. a lot of people think doing things with right hands is reasonable
3． Which statement is not included m the passage?
A. There are many famous left-handed artists, athletes and so on in the past and at present.
B. All left-handers are proud of themselves.
C. Relatively, left-handers have more difficulties to overcome than right-handers.
D. a lot of ordinary left-handers can also make great contributions to society.
4． The best title of this passage is______.
A. International Left-hander's Day B. Right Handers Should Respect Left Handers
C. Lefties Have Rights D. Left Handers, Right?
查看习题详情和答案>>