repetitively reaching for it. So I hunted around for keyboards with built-in pointing devices,which would let me keep my arms close to my body,and for other ways to heal myself.The good news is that I believe I've succeeded,even though I didn't find the perfect solution.The bad news is that my solution may not work for you.Though we all share much of our physiology,we're all different as well.On the other hand,perhaps one of the products I looked at that didn't work for me will work for you. Perfection could be had by finding a company to design a single keyboard to my exact specifications.No such luck.DS International of Glendale,Ariz.,requires a minimum order of 500 keyboards,with development costs typically ranging from 50,000 to $75,000 per project and manufacturing costs added to this. Whatever your hardware,reducing the use of your pointing device-mouse or otherwise-can help..What's more,despite the ergonomics(人体工程学)of pointing devices built into keyboards,you can't move around as quickly with them as you can with a separate mouse. Keyboard shortcuts are one solution,though they require you to memorize them.At the most basic,for instance,pressing the Control and S keys saves a file,preventing you from having to move the mouse pointer to the File menu and select Save. Questions38一42 38.How does the author look at voice recognition? 39.Why did the author look for the perfect input device? 40.According to the author,what actually caused the computer injuries? 41.What kind of keyboards did the author find to solve the problem that a computer mouse causes? 42.Why don't we have the luck to find a company to design a single keyboard to our exact specification? 884repetitively reaching for it. So I hunted around for keyboards with built-in pointing devices, which would let me keep my arms close to my body , and for other ways to heal myself. The good news is that I believe I've succeeded , even though I didn't find the perfect solution. The bad news is that my solution may not work for you. Though we all share much of our physiology , we're all different as well. On the other hand , perhaps one of the products I looked at that didn' t work for me will work for you. Perfection could be had by finding a company to design a single keyboard to my exact specifications. No such luck. DS International of Glendale , Ariz. , requires a minimum order of 500 keyboards, with development costs typically ranging from $ 50 ,000 to $ 75 ,000 per project and manufacturing costs added to this. Whatever your hardware , reducing the use of your pointing device - mouse or otherwise - can help. What's more , despite the ergonomicsC人体工程 of pointing devices built into keyboards, you can' t move around as quickly with them as you can with a separate Keyboard shortcuts are one solution , though they require you to memorize them. At the most basic , for instance , pressing the Control and S keys saves a file , preventing you from having to move the mouse pointer to the File menu and select Save. Questions 38-42 38. How does the author look at voice recognition? 39. Why did the author look for the perfect input device? 40. According to the author , what actually caused the computer injuries? ,11. What kind of keyboards did the author find to solve the problem that a computer mouse causes? 42. Why don't we have the luck to find a company to design a single keyboard to our exact specification? 884