Hacking the computer network is a creation of the electric age,but it is based on old-fashioned trust.it cannot work without trust.a rogue loose in a computer system called hacker is worse than a thief entering your house.he could go through anyones electronic mail or add to,change,distort or delete anything in the information stored in the computers memory.he could even take control of the entire system by placing his own instructions in the software that runs it.he could shut the computer down whenever he wished,and no one could stop him.then he could program the computer to erase any sign of his ever having been there. 练习: A.to show that A.hacker is more dangerous than A.thief. C.to demanD.that A.protective computer system shoulD.be set up against thieves. 2.the worD.vandalizing in line 17 means B.creating. D.updating, A.hacking is also known as computer break-in. C.hacking is A.widespreaD.concern. 4.which of the following is not mentioneD.in the passage as an instance of attack by A.hacker? B.shutting down the computer whenever he wishes. D.spoiling A.system for air traffic. A.it will cause fear among the public. C.tough measures are illegal. 【参考答案】1. A 2.C 3. B 4. C 5. D
跟小小孩说英文:In the supermarket 在超市(三)
Italian hand 幕后操纵;暗中干预
Dutch courage 酒后之勇
跟小小孩说英文:Eating ice cream 吃冰淇淋
Spanish castle 空中楼阁;不切实际
少儿英语:最常用英语口语精选
跟小小孩说英文:Don't go too far 不要走远
少儿常用英语口语
跟小小孩说英文 :Feeding the baby 喂宝宝
学前英语口语学习教程:第三单元
少儿英语必备户外经典口语
学前英语口语学习教程:第二单元
Indian giver 送东西给人日后又讨回的人
French window 落地窗
跟小小孩说英文:In the supermarket 在超市(二)
英文绕口令 你的舌头够遛吗?
学前英语口语学习教程:第五单元
跟小小孩说英文:Buying another bottle 再买一瓶
跟小小孩说英文:Having snacks 吃点心
跟小小孩说英文:In the fast food restaurant 在快餐店
跟小小孩说英文:In the supermarket 在超市(一)
跟小小孩说英文:Dining on Dragon Boat Festival 端午节吃饭
Irish bull 自相矛盾,荒唐可笑的说法
学前英语口语学习教程:第六单元
少儿英语口语句型练习
跟小小孩说英文:Dining courtesy 吃饭礼节
跟小小孩说英文:Snacks 点心
跟小小孩说英文:Having cotton candy 吃棉花糖
学前英语口语学习教程:第四单元
French leave 不告而别
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