20．A．writer                  B．worker                C．nurse                   D．student

19．A．start                    B．begin                   C．forget                  D．remember

18．A．but                      B．or                       C．and                     D．so

17．A．some                   B．all                       C．any                        D．none

16．A．reading                B．typing                 C．watching                D．leaving

15．A．greet                   B．join                     C．visit                    D．interview

（B）

    Imagine you receive an e-mail that looks something like this：ARE YOU GOING TO CLASS TODAY? How does  16  this message make you for？Why did the sender use  17  capital（大写）letters? Was he or she angry，  18  did that person just  19  to turn off the “Caps Lock（大写锁定）”on the computer．This e-mail “sounds” like the  20  is shouting because all capital letters in an e-mail is  21  the way that people shout online．

    Knowing when and whom not to  22  capital letters is just one  23  of online etiquette（礼仪）．

    Don't do anything online that you wouldn't do in  24  1ife．Don't use information that someone else has written，and  25  it's yours．Do share（分享）your knowledge of the Internet with others．

14．A．busy                    B．boring                 C．noisy                   D．quiet

13．A．wind                   B．fog                      C．cloud                   D．rain

12．A．colorful               B．dim                     C．1ight                   D．bright

11．A．work                   B．sleep                   C．travel                         D．run