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Without electronic computers, much of today's advanced technology______achieved.
A．will not have been
B．have not been
C．would not have been
D．had not been
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Without electronic computers, much of today's advanced technology______achieved.
A．will not have been
B．have not been
C．would not have been
D．had not been
The electronic games would not have ______ without being ingeniously programmed.
A．taken to
B．caught on
C．fitted in
D．set about
EC means using simple, fast and low-cost electronic communications to transact, without face-to-face meeting between the two parties of the transaction.()
A study at the University of Maryland finds that students
A．can"t live a day without electronic media.
B．have difficulty communicating with people in reality.
C．feel accustomed to electronic communications.
D．think friends online are more interesting than classmates in school.
The idea of an hour without TV is NOT radical because
A．TV is very popular among people for only twenty-five years.
B．TV is an electronic baby-sitter.
C．we might get better shows.
D．radio involves the listener' s imagination.
The following are the reasons some people prefer paper books EXCEPT that______
A．paper books involve us in the stories
B．people are used to reading paper books
C．people like the physical experience of reading paper books
D．people can read paper books without electronic device
A．Digital partitioning algorithms could be applied to electronic, and not just optical circuits.
B．The speed of photons could be shown to be significantly greater than that of electrons.
C．The precision level in basic operations can be substantially increased without great expense.
D．The accuracy of electronic circuits used to preprocess input data and post- process data could be greatly increased.
E．The microchips optical computer systems were shown to require an increasing density of interconnections.
A few decades ago, the world banking community invented new Electronic Funds Transfer (EFT) systems to move money more efficiently across countries and around the globe. The【1】benefit of such systems was to【2】the float of capital that was unavailable for use【3】 checks were being cleared through banking【4】Today, we understand that the benefits of electronic banking are far more【5】than just reducing floating cash. The entire world of banking【6】revolutionized. It is【7】more efficient and faster, but also more global. And now【8】the Internet, EFT systems are increasingly【9】with the new world of e-commerce and e-trade.
【10】1997 and 2003, EFT value【11】from less than $50 trillion to nearly $400 trillion, more than the【12】economic product of all the countries and territories of the entire world. These statistics【13】should emphasize the true importance of transnational EFT. Satellite, wireless, and cable-based electronic fund transfers【14】the hub of global enterprise. Such electronic cash is【15】central to the idea of an emerging "worldwide mind". Without the satellite and fiber infrastructure to support the flow of electronic funds, the world economy would grind to a halt.
(1)
A．hiding
B．getting
C．driving
D．giving
Electronic Teaching
The potential of closed-circuit television and other new electronic teaching tools is so great that it is fascinating to visualize "the school of tomorrow".
Televised lessons will originate from a central building having perhaps four or five master studios. The lessons will be carried into classrooms all over a city, or even an entire country.
After a televised lesson has been given, the classroom teacher will take over for the all important "follow-up" period. The students will ask any troublesome questions, and difficult points will be cleared up through discussion.
The teacher in the classroom will have additional electronic tools. On the teacher's desk, the traditional chalk and erasers will have been replaced by a multiple-control panel and magnetic tape player. The tape machines will run pre recorded lessons which pupils will follow by headphones. The lessons will be specifically geared to the students' levels of ability. For instance, while the class as a whole studies history, each student will receive an individual history lesson, directed to his particular level of ability.
Should question arise, the students will be able to talk directly to the teacher on individual "intercoms" without disturbing the rest of the class. In this way, the teacher will be able to conduct as many as three classes at the same time.
With the rapid development of computer science, students will be aided with specially prepared multimedia software to study their subjects better. Homework will possibly be assigned and handed in via electronic mail system. Students can even take examinations on their computer linked with the teacher's and get the score instantly. They will get certificates or diplomas if they pass all the required examinations. Experts believe that this type of education will be very popular in the years ahead.
In paragraph one, what does "the school of tomorrow" mean？
A．The school with a central building.
B．The school with four or five master studios.
C．The school with television.
D．The school with televised lessons and electronic teaching tools.
Electronic mail has become an extremely important and popular means of communication.
The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mall traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects.
The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mall and creates a risk that wanted electronic mail messages, both commercial and noncommercial, will be lost, overlooked, or discarded amidst the larger volume of unwanted messages, thus reducing the reliability and usefulness of electronic mail to the recipient. Some commercial electronic mail contains material that many recipients may consider vulgar or pornographic in nature.
The growth in unsolicited commercial electronic mail imposes significant monetary costs on providers of Internet access services, businesses, and educational and nonprofit institutions that carry and receive such mail, as there is a finite volume of mail that such providers, businesses, and institutions can handle without further investment in infrastructure. Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mall.
Many senders of unsolicited commercial electronic mall purposefully include misleading information in the messages' subject lines in order to induce the recipients to view the messages. While some senders of commercial electronic mail messages provide simple and reliable ways for recipients to reject (or 'opt-out' of) receipt of commercial electronic mall from such senders in the future, other senders provide no such 'opt-out' mechanism, or refuse to honor the requests of recipients not to receive electronic mail from such senders in the future, or both.
Many senders of bulk unsolicited commercial electronic mail use computer programs to gather large numbers of electronic mail addresses on an automated basis from Internet websites or online services where users must post their addresses in order to make full use of the website or service.
The problems associated with the rapid growth and abuse of unsolicited commercial electronic mall cannot be solved by the government alone. The development and adoption of techno-logical approaches and the pursuit of cooperative efforts with other countries will be necessary as well.
According to the passage, efficiency of e-mail is threatened by ______
A．heavy e-mail traffic
B．fraudulent e-mail messages
C．large volume of messages
D．increasing amount of unwanted e-mail
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