There is an old saying：No one thinks he’s a bad driver. Here’s an updated 21st century version: No one thinks he sends annoying (令人烦恼的) e-mails. But, plenty of us do. A Princeton University research found that 22 per cent of Americans say e-mail has added to their work pressures and caused misunderstandings. Here’s a guide on e-mail etiquette (礼节) to help you avoid being annoying. Experts say there are three types of e-mails with different rules-close friends, office and public e-mails. The close friends e-mail You can send your lover, your closest friends and your siblings (brothers and sisters) anything, from jokes to “you got to see this!”. But bear in mind that not everyone shares your sense of humour and you may expose them to viruses. The office e-mail Don’t add to people’s workload. Keep e-mails short and to the point. ◆Make the subject line factual and brief. ◆Write in clear, concise (简练的) sentences. ◆Provide your name and phone number at the end. The public e-mail Occasionally we have to send an e-mail to a group of people. If possible, write your public e-mails with a who, what, when, where structure. For example: Who: All members of the soccer team What: Team photo When: Saturday, March 25, at noon Where: Playing field 2. Finally, before you hit “Send”, check the following: ◆Is the e-mail a “flame”? Never send an e-mail in anger, It could stay around forever and haunt (萦绕心头) your professional and personal life. ◆Check the “To” field. Is this really who you want to send the message to? ◆Spell-check the message. Does it have an error that can affect you badly? 68. The writer may want to tell the reader that _____. A. mails online are often sent to wrong places B. different e-mails should be written in different ways C. sending office e-mails is sure to add to people’s workload D. the public e-mail is usually sent to a large number of people 69. According to the writer, _____. A. e-mails with some misspellings may hurt the receiver B. before sending an e-mail, the sender should ask someone to check it C. jokes sent to a close friend online sometimes may be harmful D. about 80％ of Americans like sending and receiving e-mails 70. If an e-mail is a “flame”, the sender of it must be very _____ at the moment. A. angry                         B. excited              C. worried                     D. disappointed