题目内容
（请给出正确答案）
Computers can be designed ______ many automation processes purposes.
A．to
B．in
C．on
D．for
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更多“Computers can be designed ____…”相关的问题
Home computers can be used for ______.
A．writing letters
B．playing games
C．doing business
D．all of the above
Which of the following is mentioned in the passage？
A．Future computers can see things as human beings do
B．Future computers will be designed to have hearing ability
C．The life of the blind and deaf will be easier with the help of computers
D．A person who has lost feeling can still have a near-normal brain provided by scientists
The last paragraph suggests that______.
A. a modern computer won't be down
B. computers can take the place of humans
C. there will be great changes in computers
D. sometimes a computer may bring suffering to people
Home computers can be use for ______.
A．writing letters
B．playing games
C．doing business
D．all of the above
It can be inferred from the passage that the author would disapprove of______.
A．computer science courses in high schools
B．businessmen and women who use pocket calculators
C．maintenance(连续不断) checks on computers
D．companies which depend entirely on computers
The virus can affect the computers in the computer system by ______.
A．turning off the power
B．making them copy itself
C．sending them copies of itself
D．sending them some destructive ordens directly
A．computers are only machines, while managers are humans
B．computers can't think
C．computers can't individually solve problems or make decisions both
D．B and C
The marvel of the machine age, the electronic computer has been in use only since 1946. It can do simple computations—add, subtract, multiply, and divide—with lightning speed and perfect accuracy. It can multiply two 10-digit numbers in 1/1, 000 second, a problem that would take an average person five minutes to do with pencil and paper. Some computers can work 500, 000 times faster than any person can.
Once it is given a program, that is, a carefully worked-out set of instructions devised by a technician trained in computer language, a computer can gather a wide range of information for many purposes. For the scientist it can get information from outer space or from the depths of the ocean. In business and industry the computer prepares factory inventories, keeps track of sales trends and production needs, mails dividend checks, and makes out company payrolls. It can keep bank accounts up to date and make out electric bills. If you are planning a trip by plane, the computer will find out what route to take and what space is available.
Why does the author regard the electronic computer as the marvel of the machine age？
A．Because electronic computers are rare.
B．Because people know little about electronic computers.
C．Because electronic computers can do much more kinds of work that human beings can't.
D．Because electronic computers have been widely suspected.
The virus told each computer to make many copies of itself. Within a few minutes, all the computers' power was being used to make copies of the virus. The computer could do no other work. It finally slowed down greatly, or simply stopped working. Computer experts spent many days trying to destroy the virus in the computer system.
The experts agree the virus could have been much worse. They say it could have sent orders to destroy huge amounts of electronic information.
Many experts believe, the recent computer virus showed the need for better computer security (安全). But that is a problem. The affected system provides a free exchange (交换) of ideas and information among universities, private companies and government offices. Increasing security too much would destroy this exchange. It would slow progress on many important research projects.
Which of the following statements is true？
A．Many computers were attacked by a virus in the U. S.
B．Many computers attacked by a virus in the U.S. lost their information.
C．A computer virus can harm human body.
D．A computer virus can help the computer owner do many things.
Which of the following is NOT true？ ______.
A．Computers perform. not only data processing function in business, but also are used as tools in
B．Problem-solving and decision-making
C．In performing certain data processing tasks, computers can process information more efficiently and effectively than humans
D．A company or individual must buy a computer system in order to be able to use one
