Tast 4The following is a set of instructions about how to use credit card．After reading it，you are required to complete the statements that follow the questions(No．56 to No．60)． A——attachment B——security certificate C——carbon copy D——screen saver E——submit post F——firewall G——log out H——hacker I——Internet relay chat J——junk mail K——remote login L——log on M——site manager N——net worm O——online shopping P——click rate Q——search engine ( )远程登录 ( )搜索引擎