人机交互(Human–Computer Interaction,HCI)是指用户与系统之间的交互,完成确定任务的人与计
A.移动互联时代,主要的交互方式是触摸、手写、手势、语音
B.以人为中心的自然交互方式将成为未来人机交互的主要方式
C.PC时代的人机交互手段是鼠标加键盘,是一种以机器为中心的交互
D.语音交互将完全替代传统的鼠标键盘输入方式,键盘鼠标等输入设备将被淘汰
A.移动互联时代,主要的交互方式是触摸、手写、手势、语音
B.以人为中心的自然交互方式将成为未来人机交互的主要方式
C.PC时代的人机交互手段是鼠标加键盘,是一种以机器为中心的交互
D.语音交互将完全替代传统的鼠标键盘输入方式,键盘鼠标等输入设备将被淘汰
A.the computer' s memory has a little bigger capacity than a teenager' s
B.the computer' s memory capacity is much smaller that an adult human being' s
C.the computer' s memory capacity is much smaller even than a teenager' s
D.both A and B
The whole passage implies that ________
A.only human beings have problem-solving intelligence
B.a person' s memory is different from a computer' s in every respect
C.animals are able to solve only very simple problems
D.animals solve problems by instincts rather than intelligence
Which of the following is supported by the author?
A.Computers will be an indispensable part of future life
B.People will become slaves to modern computers
C.Some scientists are afraid of computer crimes
D.Computers will play a role as important as human brains
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.
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.
Questions 6 to 10 are based on the followingpassage:
It is difficult to imagine what life would belike without memory. (78) The meanings of thou-sands of everydayperceptions, the bases for the decisions we make, and the roots of our habitsand skills are to be found in our past experiences,which are brought into thepresent by memory.
Memory can be defined as the capacity to keepinformation available for later use. It includes not only “remembering” thingslike arithmetic or historical facts, but also involving any change in the wayan animal typically behaves. (79) Memory is involved when a rat gives upeating grain be-cause he has sniffed something suspicious in the grain pile. Memoryis also involved when a six- year-old child learns to swing a baseball bat.
Memory exists not only in humans and animalsbut also in some physical objects and ma-chines. Computers, for example,contain devices for storing data for later use. It is interesting to comparethe memory-storage capacity of a computer with that of a human being. Theinstant-access memory of a large computer may hold up to 100,000 “words”一ready for instant use. An averageU. S.teenagerprobably recognizes the meaning of about 100,000 words of English. However,this is but a fraction of the total amount of information which the teenagerhas stored. Consider, for ex-ample ,the number of faces and places that the teenager can recognize on sight.
The use of words is the basis of the advancedproblem-solving intelligence of human beings. A large part of a person’s memoryis in terms of words and combinations of words.
6. Accordingto the passage, memory is considered to be_____________.
A.the basis for decision making and problem solving
B.an ability to store experiences for future use
C.an intelligence typically possessed by human beings
D.the data mainly consisting of words and combinations of words
A.work rapidly
B.be large and expensive
C.be easy to use
D.be used for fun
A.work rapidly
B.be large and expensive
C.be easy to use
D.be used for fun
Some of the computer experiments now going inspire imagination of the future. For example, scientists are working in devices that can electronically perform. some sight and hearing functions, which could make easier for the blind and deaf. They are also working on artificial arms and legs that respond to the electric impulses (脉冲) produced by the human brain. Scientists hope that someday a person who has lost an arm could still have near-normal brain control over an artificial arm.
Video games, computerized effects in movies, and real-life training machines now being used by the U. S. Army are causing some people to predict new educational uses for computers. Computers could someday be used to imitate travel to other planets, to explore the ocean floor or to look inside an atom.
Experiment with electronic banking and shopping inspire predictions that these activities will soon be done from home computer terminals (终端) . Cars, too, might be equipped with computers to help drivers find their way around or to communicate with home and office computers.
Many people, including handicapped (残废的) workers with limited ability to move around, already are working at home using computer terminals. Each terminal is connected to a system at a company's main office. Some futurists say the day may come when few people will have to leave home to go to work—they'll just turn on a terminal.
Which of the following would be the most appropriate title for the passage?
A.Futurists and Computers
B.A Look at Future Uses of Computers
C.Computer Experiments
D.Scientists and Computers