A laser beams B digital codes C musical notes D special sounds 42 E-mail is mentioned in the third paragraph to show A the variety of digital communications B the development of new technologies C the usefulness of digital codes D the relationship between communication and technology 43 One of...
篇1:四级晨读主题美文 最新四级晨读主题美文精选 Net Aroma: E-mail tries out a sense of smell You could soon be able to spice up your e-mails with your favourite perfume. UK net provider Telewest Broadband is testing a system to let people to send aromatic e-mails over the internet. It ...