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单选题
With the introduction of the electronic computer, there is no complicated problem _____ can be solved in a few hours.
A
but
B
which
C
that
D
what
参考答案
参考解析
解析：
句意：由于引进了电子计算机，没有在几小时内解决不了的复杂问题。本题考查but的特殊用法，but除了作连接词外，还可以作关系代词，引导定语从句，以肯定的形式表达否定的意思，相当于“that/which…not”；本题若用that的话意思正相反。
句意：由于引进了电子计算机，没有在几小时内解决不了的复杂问题。本题考查but的特殊用法，but除了作连接词外，还可以作关系代词，引导定语从句，以肯定的形式表达否定的意思，相当于“that/which…not”；本题若用that的话意思正相反。
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C.ERP
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Computer MouseThe basic computer mouse is an 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 on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak,so the mouse is a very natural pointing device.Other computer pointing devices include light pens,graphics tablets and touch screen,but the mouse is still our workhorse.The computer mouse was invented in 1964 by Douglas Englehart of Stanford University.As computer screens became popular and arrow keys were used to more 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 for 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 mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad,it presses against and turns two shafts.The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED)mounted on either side.One LED sends a light beam to the LED on the other 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 later the light beam is blocked until the next hole is in place.The LED detects a changing pattern of light,converts the pattern into an electronic signal,and sends the signal to the computer through wires in a cable that goes out 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 screen.So far we have only discussed the basic computer mouse that most 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 the dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.When an ordinary computer mouse gets dirty,it has to be replaced with a new one.A:Right B:Wrong C:Not mentioned
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Given the advantages of electronic money,you might think that we would move quickly to the cashless society in which all payments are made electronically.1 a true cashless society is probably not around the corner.Indeed,predictions have been 2 for two decades but have not yet come to fruition.For example,Business Week predicted in 1975 that electronic means of payment would soon"revolutionize the very 3 of money itself,"only to 4itself several years later.Why has the movement to a cashless society been so 5 in coming?Although electronic means of payment may be more efficient than a payments system based on paper,several factors work 6 the disappearance of the paper system.First,it is very 7 to set up the computer,card reader,and telecornmunications networks necessary to make electronic money the 8 form of payment Second,paper checks have the advantage that they 9 receipts,something that many consumers are unwilling to 10.Third,the use of paper checks gives consumers several days of"float"-it takes several days 11 a check is cashed and funds are 12 from the issuer's account,which means that the writer of the check can cam interest on the funds in the meantime.13 electronic payments arc immediate,they eliminate the float for the consumer.Fourth,electronic means of payment may 14 security and privacy concerns.We often hear media reports that an unauthorized hacker has been able to access a computer database and to alter information 15 there.The fact that this is not an 16 occurrence means that dishonest persons might be able to access bank accounts in electronic payments systems and 17 from someone else's accounts.The 18 of this type of fraud is no easy task,and a new field of computer science is developing to 19 security issues.A further concern is that the use of electronic means of payment leaves an electronic 20 that contains a large amount of personal data.There are concerns that government,employers,and marketers might be able to access these data,thereby violating our privacy.6选？A.for
B.against
C.with
D.on
考题
Given the advantages of electronic money,you might think that we would move quickly to the cashless society in which all payments are made electronically.1 a true cashless society is probably not around the corner.Indeed,predictions have been 2 for two decades but have not yet come to fruition.For example,Business Week predicted in 1975 that electronic means of payment would soon"revolutionize the very 3 of money itself,"only to 4itself several years later.Why has the movement to a cashless society been so 5 in coming?Although electronic means of payment may be more efficient than a payments system based on paper,several factors work 6 the disappearance of the paper system.First,it is very 7 to set up the computer,card reader,and telecornmunications networks necessary to make electronic money the 8 form of payment Second,paper checks have the advantage that they 9 receipts,something that many consumers are unwilling to 10.Third,the use of paper checks gives consumers several days of"float"-it takes several days 11 a check is cashed and funds are 12 from the issuer's account,which means that the writer of the check can cam interest on the funds in the meantime.13 electronic payments arc immediate,they eliminate the float for the consumer.Fourth,electronic means of payment may 14 security and privacy concerns.We often hear media reports that an unauthorized hacker has been able to access a computer database and to alter information 15 there.The fact that this is not an 16 occurrence means that dishonest persons might be able to access bank accounts in electronic payments systems and 17 from someone else's accounts.The 18 of this type of fraud is no easy task,and a new field of computer science is developing to 19 security issues.A further concern is that the use of electronic means of payment leaves an electronic 20 that contains a large amount of personal data.There are concerns that government,employers,and marketers might be able to access these data,thereby violating our privacy.19选？A.cope with
B.fight against
C.adapt to
D.call for
考题
The term computer describes a device made up of a combination of electronic components．By itself, a computer has no ( ) and is referred to as hardware, which means simply the physical equipment． The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications．
A system is defined as a collection of related components that ( ) to perform a task in order to accomplish a goal． Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions．
Systems analysis and design is to ascertain how a system works and then take steps to make it ( ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)（ ）
From time to time, organizations need to (5 ) their information systems, in, response to new marketing' opportunities, modified government regulations, the introduction ．of new technology, merger with another company, or other developments． When change is needed, the time is ripe for applying the principles of systems analysis and design．
（5）应选（ ）。
A. modify
B. replace
C. Change
D. transfer
考题
The term computer describes a device made up of a combination of electronic components．By itself, a computer has no ( ) and is referred to as hardware, which means simply the physical equipment． The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications．A system is defined as a collection of related components that (请作答此空) to perform a task in order to accomplish a goal． Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions．Systems analysis and design is to ascertain how a system works and then take steps to make it ( ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)（ ）From time to time, organizations need to ( )their information systems, in, responseto new marketing' opportunities, modified government regulations, the introduction ．of new technology, merger with another company, or other developments． When change is needed, the time is ripe for applying the principles of systems analysis and design．A.interact
B.work
C.connect
D.change
考题
共用题干
Computer Mouse The basic computer mouse is______(51)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______(52)until it gets dirty and we have to learn how to______(53)it.We learn to point at things______(54)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_____(55)in 1964 by Douglas Englehart of Stanford University.As computer screens became more popalar 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_____(56)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______(57) light-emitting diodes(LED)mounted on either side.One LED sends a light beam to the LED on______(58)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______(59)the light beam is blocked until the next hole is in place.The LED______(60)a changing pattern of light, converts the pattern______(61)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______(62). So far we have only discussed the basic computer mouse that______(63)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.______(64)you have to clean your mouse.The newer optical mice______(65)this problem by having no moving parts.61._________A:in B:fromC:for D:into
考题
单选题With the introduction of the electronic computer, there is no complicated problem _____ can be solved in a few hours.A
butB
whichC
thatD
what
考题
单选题Complicated ______ it is, the problem can be solved in only two hours with an electronic computer.A
althoughB
even thoughC
even if D
as
考题
单选题Inerting means（）.A
the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB
the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC
the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoD
All of the above
考题
单选题According to the passage, American electronic waste is exported to other countries because these countries have______.A
the resources and more space to process the e-wasteB
less strictly enforced environmental safety standardsC
a lot of skilled e-waste workersD
many computer recycling businesses
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