首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
自考
It began as a game: high school and college students studying computer technology figured out they could use personal computers
It began as a game: high school and college students studying computer technology figured out they could use personal computers
admin
2013-07-02
56
问题
It began as a game: high school and college students studying computer technology figured out they could use personal computers to break into telephone company computers and make free, long-distance telephone calls. These young computer wizards soon gained the nickname" hackers".
Police put the collar on a few hackers,but many went on to even more complex hacking. One hacker was arrested for making illegal telephone calls and later used a jailhouse phone to alter a police officer’s credit records to get back at the officer for arresting him. The hacker also used a computer to alter his college records to give himself better grades. As hackers gained experience,they began invading computers at banks,airlines and other businesses. In one scheme,a hacker instructed an airline’s computer to give him free airplane tickets.
The U. S. government is worried hackers may break into its sophisticated networks of defense computer. The government’s classified secrets are vulnerable because thousands of government computers are connected by telephone lines that hackers can tap into. In November 1988, a college student tapped into a non classified U. S. Defense Department computer network called Arpanet. The hacker injected a computer program that left copies of itself throughout Arpanet. Some hackers use each "viruses" to destroy all the data in a computer. But in this case,government officials shut down the network before the program reached every computer in the system. Shutting down the system angered many researchers who were using the computers. The hacker turned himself into police and told them how to get his program out of the computer system. He was charged with a crime.
The incident put the spotlight on computer hacking in the United States. Many companies have hired experts to protect their computers from hackers, and many computer experts now advise companies on how to protect their computers.
The U. S. government believes foreign governments have hired hackers to try to break into top-secret defense computers. It fears a hacker could inject a virus into military computers that would erase all the data during a war.
Experts disagree over whether a computer network can ever be safe from hacking. But in the future, some of the most brilliant minds in the U. S. will be working to frustrate the efforts of computer hackers and spies.
The main idea of the article is______ ( )
选项
A、computer hackers only want to make free long distance phone calls
B、the government wants to hire computer hackers to spy on the Russians
C、computer hackers are a threat to private companies and government secrets
D、many companies have hired experts to protect their computers from hackers who carry viruses
答案
C
解析
主旨题。“本文的主要内容是什么?”C选项“电脑黑客对私人电脑和政府机密是威胁”,是正确答案。A选项“电脑黑客只想打免费长途电话”;B选项“政府想雇佣电脑黑客监视俄国”;D选项“许多公司雇佣专家来保护电脑,使其不受携带病毒的黑客的进攻”,三个选项都不是全文主旨。
转载请注明原文地址:https://kaotiyun.com/show/CPrx777K
本试题收录于:
英语阅读(一)题库文史类分类
0
英语阅读(一)
文史类
相关试题推荐
(63)Learningtogetherisafruitfulsourceofrelationshipbetweenchildrenandparents.Byplayingtogether,parentslearnmor
Whataretheauthor’stwomajorexplanationsfortherelationbetweenproximityandliking?
Englishisnowtheinternationallanguageforairlinepilots,scientists,medicalexperts,businessmenandmanyothers.Conseque
Englishisnowtheinternationallanguageforairlinepilots,scientists,medicalexperts,businessmenandmanyothers.Conseque
Englishisnowtheinternationallanguageforairlinepilots,scientists,medicalexperts,businessmenandmanyothers.Conseque
Regularinteractionorfamiliarityseemstoincreaseliking;often,thepeopleweinteractwiththemostaresimplythosewhoar
(make)Hecouldhaveinsistedthathisdailyvisitor______uphermindaboutthecomputer.
AlbertEinsteinonceattributedthecreativityofafamousscientisttothefactthatheneverwenttoschool,andthereforepre
随机试题
患儿男,臀位产。生后5小时出现呕吐,呈喷射性,伴尖声哭叫、唇稍发绀、体温不升。查体:前囟饱满,心肺正常,拥抱反射消失。疑为新生儿颅内出血。首优的护理诊断为
男性患者,45岁,工人。一年前逐渐出现心前区疼痛、无力、气短症状,有时出现心前区疼痛并放射到左上肢和左后背。三月来有过两次晕厥。BP130/70mmHg,P90次/分,双肺未闻及干湿啰音,HR110次/分,律不齐,强弱不一,胸骨左缘3、4肋间闻及粗糙
γ-谷氨酰转肽酶(GGT)含量最多的器官为
关于宪法规范的特点,下列表述哪一项是不正确的?()
下列合同中,属于要式法律行为的有()。
下列各项中,属于企业以清单申报的方式向税务机关申报扣除的资产损失有()。
某中班最近的活动主题是“泡泡"。孩子们已经有了很多吹泡泡的经验,而且他们也会用圆形的“吹泡泡器”(实际上就是用铁丝做成的一个环)来帮助自己吹出一个大“泡泡”。这天,老师给儿童提供了几种不同形状的“吹泡泡器”:三角形、方形、半圆形等。她引导儿童讨论:用它们可
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。
Whatdothemanandthewomantalkabout?
AlthoughBeethovencouldsitdownandcomposeeasily,hisreallygreatcompositionsdidnotcomeeasilyatall.Theycosthima
最新回复
(
0
)