首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Computer Mouse The basic computer mouse is【C1】______amazingly clever invention with a relatively simple design that allows u
Computer Mouse The basic computer mouse is【C1】______amazingly clever invention with a relatively simple design that allows u
admin
2014-09-13
20
问题
Computer Mouse
The basic computer mouse is【C1】______amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling(滚动)on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it【C2】______until it gets dirty and we have to learn how to【C3】______it. We learn to point at things【C4】______we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screens, but the mouse is still our workhorse.
The computer mouse was【C5】______in 1964 by Douglas Englehart of Stanford University. As computer screens became more popular and arrow keys were used to move around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse【C6】______routine computer tasks.
How does the mouse work? We have to start at the bottom, so think upside down for now. It all starts with the mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts(轴). The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices【C7】______light-emitting diodes(LED)mounted on either side. One LED sends a light beam to the LED on【C8】______side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment【C9】______the light beam is blocked until the next hole is in place. The LED【C10】______a changing pattern of light, converts the pattern【C11】______an electronic signal, and sends the signal to the computer through wires in a cable that goes out of the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer【C12】______.
So far we have only discussed the basic computer mouse that【C13】______of you probably have or have used. One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt.【C14】______you have to clean your mouse. The newer optical mice【C15】______this problem by having no moving parts.
【C7】
选项
A、called
B、said
C、spoken
D、told
答案
A
解析
called在这里是“被称作”之意。这句话的意思是电子发光没备被人们称为LED,A项符合题意。
转载请注明原文地址:https://kaotiyun.com/show/CHQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
A.BreakthenewsascalmlyaspossibletochildrenB.BreakthenewsatyourownpaceC.Sharethegoodnewswithyourfriends
Herjudgementiswarped,biasedbecauseofpossibleadvantageforherself.
Willyouplease(call)myhusbandassoonaspossible?
Theiceisnotthickenoughtobeartheweightofatank.
Americansstillhavebeengainingweight,althoughtheyhavecuttheiraveragefatintakefrom36to34percentoftheirtotald
LightNight,DarkStarsThousandsofpeoplearoundtheglobestepoutsidetogazeattheirnightsky.Onaclearnight,with
AinyourbodyBwithoutwaterCbeforelongDforachangeEonabusydayFtoyourweightOnecannotlive______.
CosmeticSurgerySurgerythatcanimprovethewayapersonlooksisbecomingmoreandmorepopularintheUnitedStates.Thi
Thousandsofpeopleperishedinthestorm.
Featuressuchasheight,weight,andskincolordifferfromindividualtoindividualandfromfacetoface。
随机试题
糖异生途径的关键酶有
A.主要ABO血型不合B.次要ABO血型不合C.主次要ABO血型均不合D.ABO血型相合E.ABO血型不同A型患者移植AB型造血干细胞属于
室间隔缺损伴亚急性细菌性心内膜炎时,其栓塞的部位发生在
痰饮的治疗原则是()
GH兴奋试验有助于明确病因诊断的情况是
旅游投诉处理机构处理旅游投诉,除另有规定外,实行()制度。
海南拥有丰富的历史、地域、民族文化资源:有被誉为中国纺织史“活化石”的黎锦民族文化,有以流传300多年的琼剧为代表的戏剧文化,有以海上丝绸之路为代表的海洋文化,有以热带雨林为代表的绿色生态文化,有琼崖23年红旗不倒的红色文化,还有以高尔夫运动等为代表的现代
关于南京临时政府的评价,下列说法正确的有()
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【21】onlyamongthosewithwhomhe
TheUnitedStatesDeclarationofIndependencewasdraftedandsignedin______
最新回复
(
0
)