英语阅读理解第三篇

The computer virus is an outcome of the computer overgrowth in the 1980s. The term computer virus comes from the likeness between the viruses that harm the body and the harmful viruses. However, computer viruses are small programs. They reproduce by attaching a copy of themselves to another program.

Once attached to another program, viruses then look for other programs to “infect”. In this way , the virus can spread quickly throughout a single computer or an entire network when it infects a LAN or a multi-user system. At some point, the virus attacks according to how it is programmed. The timing of the attack can be linked to a number of situations, such an a certain time or date, the presence of a particular object, the security level of the user, and the number of times a program is used .Similarly, the pattern of attack comes in different ways .The so-called“harmless” viruses might simply show a message, like the one that infected IBM’s main computer system in 1987 with Christmas greetings. Harmful viruses are designed to damage the system. They can wipe out data, cross out information , or rewrite the hard disk.

Main Types of Viruses

There are four main types of viruses: shell, intrusive(侵扰的),operating system, and source code(源代码).

Shell viruses wrap themselves around a host program, but don’t change it .Shell programs are easy to write, which is why about half of viruses are of this type.

Intrusive viruses invade an existing program and actually place a part of them into the host program. Intrusive viruses are hard to write and very difficult to remove without damaging the host file.

Shell and intrusive viruses usually attack executable program files—those with a .com or .exe extension, although data files are also at risk.

Operating system viruses work by replacing part of the operating system with their wen code. They are very difficult to write and have the ability, once loaded, to take total control of your system.

Source ode viruses are intrusive programs that are inserted into a source program such as those written in Pascal prior to the program being followed. They are the least common viruses because they are not only hard to write, but also have a limited number of hosts compared with the other types.

Be Cautious About the Second Network Viruses

Do you believe it? Network viruses can steal money! And they are coming for your computer right now. So far the Internet has become the main channel through which computer viruses spread. Even without getting information from the network, your computer can be infected by the second network computer viruses, which are hidden in some machines on the network.

The virus that can steal your money is a kind of the second network viruses. It was designed and inserted in some machines on the network. When your computer is linked to one of these machines, the virus will invade your hard disk and search whether Intuit Quicken, an accounting program, is installed. One of this accounting program’s functions is to transfer accounts automatically. Once the program is infected, your money will be transferred to an additional account opened by the virus program without anybody knowing it.

https://www.wendangku.net/doc/4216646499.html,puter viruses are small programs, which________.

A)are similar to the viruses that harm the human body

B)invade a living cell and produce other viruses

C)reproduce by attaching a copy of themselves to another program

D)come into being during the computer overgrowth in the 1990s

2.Viruses can infect other programs if only they are_______.

A)affected by another program

B)spread throughout a computer

C)attached to another program

D)attacked by other programs

3.The four main types of viruses for the purpose of_________.

A)intrusive

B)operating system

C)source code

D)hard disk

4.What do intrusive viruses place into a host program?

A)The host file

B)Some virus

C) A part of the program

D)An existing program

5.What must an operating system virus do before overtaking an operating system?

A)Load onto the system

B)Take control of your system

C)Replace its code

D)Write an operating system

大一英语期末考试试题精选

大一英语期末考试试题精选 又到一个学期的期末了，大家复习好大学英语了吗?为大家精心挑选了一份大学英语第一学期期末试卷，供大家复习使用，希望能够帮助到大家! 大学一年级英语试卷 Part II Reading Comprehension (30 %) Directions: There are four passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheetwith a single line through the center. Passage One Science is not a set of unquestionable results but a way of understanding the world around us. Its real work is slow. The scientific method , as many of us learned in school, is a gradual process that begins with a purpose or problem or question to be answered. It includes a list of materials, a procedure to follow, a set of observations to make and, finally, conclusions to reach. In medicine, when a new drug is proposed that might cure or control a disease, it is first tested on a large random group of people, and their reactions are then compared with those of another random group not given the drug. All reactions in both groups are carefully recorded and compared, and the drug is evaluated. All of this takes time and patience. It’s the result of course, that makes the best news—not the years of quiet work that characterize the bulk of scientific inquiry. After an experiment is concluded or an observation is made, the result continues to be examined critically. When it is submitted for publication, it goes to a group of the scientist’s colleagues, w ho review the work. Einstein was right when he said: “No amount of experimentation can ever prove me right, a single experiment can at any time prove me wrong.”

高考英语阅读理解基础练习题(29)

高考英语阅读理解基础练习题（29） 阅读理解 When did you last visit a shopping mall? In many places, the answer would be"last weekend．" Some people go even more often．Why? Malls offer goods andservices all in one place: food, clothing, things for their houses, entertainment, evenmedical services．So, are they one of the highlights of modern civilization?Environmental activists would say no and would go even further, arguing thatconsumer behavior is causing a huge environmental disaster．They cause consumers' ignorance of the side effect of their shopping—urban sprawl （扩大）． Social scientists agree that patterns of development have changed the landscape alot．Before 1950, most people lived in towns or cities and either walked to work ortook public transportation．Only very wealthy people had automobiles．Farmers livedin rural areas or far-away villages and came into town only when they needed thingsthey couldn't produce themselves．If you stared at the landscape you would see townssurrounded by the countryside． Now automobiles become affordable and people are quick to make use of them．Ambitious workers could live in suburbs, just outside cities, which have started togrow rapidly．As long as there is lots of cheap land there, no one pays much attentionto the usage of that land．Malls, fast food restaurants, cinemas, and such spread out inlarge, flat buildings．These one-storey buildings and their parking lot take up too muchspace．Many farmers think they are better off selling their land than growing crops．Noone has realized once the land is built up in urban sprawl, the good farming land willbe ruined forever．There is no way to preserve （保护） it．Only in recent years have people come to miss the old way of life as they havelooked into the problems of unconditional growth．Now people realize that urbansprawl has come with serious environmental problems．The bad effects that sprawlbrings about include air and water pollution, loss of agricultural land, traffic jams, andso on．Many scholars think it's time to analyze the problems better so we can developproper policies to control further sprawl．Some think the best way to do is to educatecitizens．

小学六年级英语阅读试题及答案

小学六年级英语阅读试题及答案 一、Read and judge阅读短文，判断下列句子正（T）误（F）。 Passage 1 Many parts of the world have four seasons. They are spring, summer, fall and winter. Spring follows winter. It becomes warmer and the days become longer. Plants begin to grow and many animals have babies. Summer is the hottest season. It does not get dark until late. Plants grow fast. In fall the days get shorter. The weather turns cooler. Trees may lose their leaves. Some birds fly to warmer places. Winter is the coldest season. It gets dark early in the evening. Plants stop growing and many trees are bare(光秃)。 1. All parts of the world have four seasons.( ) 2. Many animals have babies in spring.( ) 3. Summer is the hottest season.( ) 4. The day become longer in fall.( ) 5. Winter comes. The plants stop growing.( ) Passage 2 Mary and Kate are sisters. They just had a physical examination(体检)。These 1. Mary is Kate’s sister.() 2. Kate is older than Mary.( ) 3. Mary has long and brown hair.( ) 4. Mary is 10kg heavier than Kate.( ) 5. Their eyes’ colour are same.() Passage 3 On Sunday morning, Mr Baker takes Mike and Joan to a plane. He opens the door of the plane and lets the children in. Soon the plane begins to up. Joan looks out of the window, “Oh, we’re like birds in the sky!” She says. She looks

大一英语上学期期末考试试卷

2010级大学英语第一学期期末考试(A卷) Jan., 2011 Part II Reading Comprehension (30 %) Directions: There are four passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center. Passage One Science is not a set of unquestionable results but a way of understanding the world around us. Its real work is slow. The scientific method , as many of us learned in school, is a gradual process that begins with a purpose or problem or question to be answered. It includes a list of materials, a procedure to follow, a set of observations to make and, finally, conclusions to reach. In medicine, when a new drug is proposed that might cure or control a disease, it is first tested on a large random group of people, and their reactions are then compared with those of another random group not given the drug. All reactions in both groups are carefully recorded and compared, and the drug is evaluated. All of this takes time and patience. It’s the result of course, that makes the best news—not the years of quiet work that characterize the bulk of scientific inquiry. After an experiment is concluded or an observation is made, the result continues to be examined critically. When it is submitted for publication, it goes to a group of the scientist’s colleagues, who review the work. Einstein was right when he said: “No amount of experimentation can ever prove me right, a single experiment can at any time prove me wrong.” In August 1996, NASA announced the discovery in Antarctica of a meteorite（流星） from Mars that might contain evidence of ancient life on another world. As President Clinton said that day, the possibility that life existed on Mars billions of years ago was potentially one of the great discoveries of our time. After the excitement wore down and initial papers were published, other researchers began looking at samples from the same meteorite. Some concluded that the “evidence of life”was mostly contamination from Antarctic ice or that there was nothing organic at all in the rock. Was this a failure of science, as some news reports trumpeted? No! It was a good example of the scientific method working the way it is supposed to. Scientists spend years on research, announce their findings, and these findings

最新高中基础英语阅读理解

高中基础英语阅读理解3 Mr. Lang worked in a factory. As a driver, he was busy but he was paid much. His wife was an able woman and did all the housework. When he came back, she took good care of him and he never did anything at home. So he had enough time when he had a holiday. A few friends of his liked gambling(赌博) and he learned it soon. So he was interested in it and hardly forgot anything except gambling. He lost all his money and later he began to sell the television, watches and so on. His wife told him not to do it but he didn’t listen to her. She had to tell the police. He and his friends were punished for it. And he was hardly sent away. After he came out of lockup(拘留所), he hated her very much and the woman had to leave him. It was New Year’s Day. Mr. Lang didn’t go to work. He felt lonely and wanted to gamble again. He called his friends and they came soon. But they were afraid the police would come. He told his five-year-old son to go to find out if there were the policemen outside. They waited for a long time and didn’t think the police would come and began to gamble. Suddenly opened the door and in came a few policemen. “I saw there weren’t any policemen outside, daddy,” said the boy, “so I went to the crossing and asked some to come.” 1. Mr. Lang was paid much because _______. A. he was a driver B. he worked in a factory C. he had a lot of work to do D. he had worked there for a long time 2. Mrs. Lang did all housework because _______. A. she couldn’t find any work B. she thought he r husband was tired C. her husband spent all time in gambling D. she wouldn’t stop her husband gambling 3. _______, so he was put into lockup. A. Mr. Lang often gambled B. Mr. Lang was late for work C. Mr. Lang didn’t help his wife at home D. Mr. Lang wasn’t polite to the police 4. The woman had to leave Mr. Lang because _______. A. he didn’t love her any longer B. he wouldn’t stop gambling C. he had been put into lockup D. he was hardly sent away by the factory 5. Which of the following is right? A. The boy hoped his father to be put into lockup again. B. The boy thought his father needed some policemen. C. The boy hoped his father to stop gambling soon. D. The boy hoped his mother to come back. (2) Dear Sir, I am writing about your January bill, which I am returning with this letter. I am not going to pay this bill. Last month I bought a table and four chairs for $65.50. They were sent to me on December 18. That night one leg of the table broke while my wife was putting our dinner on it. It fell on one of the chair, and that broke, too. Our $ 2.50 steak(牛排) landed on the floor, and the dog ate it. I spoke to the salesmen who had sold me the table and the chairs. He told me to write you a letter. I wrote you on December 20, saying that I was not going to pay for the furniture. On December 21 some men came and took it back to the store. Please do something about your records. I do not want to receive another bill for the furniture which I returned. Yours truly

大一第二学期英语期末试卷

each

C) He will go when he feels better. D) He won’t go as he hasn’t finished his work. 4. A) Check the timetable.B) Go to the railway station earlier. C) Travel on a later train.D) Cancel the trip earlier. 5. A) In New York.B) In Boston. C) In Newport.D) In Washington. 6. A) A clerk at the airport information desk. B) A clerk at the railway station information desk. C) A policeman. D) A taxi-driver. 7. A) A guest and a receptionist. B) A passenger and an air hostess. C) A customer and a shop assistant. D) A guest and a waitress. 8. A) He’s better.B) He’s feeling worse. C) He’s sick in bed.D) He has recovered. 9. A) The man didn’t want the woman to have her hair cut. B) The woman followed the man’s advice. C) The woman is wearing long hair now. D) The man didn’t care if the woman had her hair cut or not.

六年级英语阅读理解含答案

阅读理解（一） There are forty-two students in our class . There are also two American boys . They are Jack and Mike . They are our good friends . They like watching TV ,but they don’t like playing basket ball .They often go to school by bike . And I often go to school on foot . There is one English girl in our class . Her name is Lucy . She likes playing basketball and she also likes swimming . She usually does her homework in the evening . She often watches TV on Saturday afternoons . She is my good friend . All of the Chinese students are Yong Pioneers . 根据短文内容，判断正（T）误（F）。 ( ) 1. There are thirty-nine students in our class . ( ) 2. There are two American girls and one English boy in our class . ( ) 3. Jack and Mike are our good friends . ( ) 4. Jack and Mike like playing basketball . ( ) 5. Lucy often does her homework on Saturday afternoons . 阅读理解（二） My name is Jack . I am a pupil of Grade One . I’m in No.1 Middle School . On weekdays I get up at six o’clock . I have breakfast at seven and then I go to school by bik e . We begin our class at eight o’clock in the morning . We have four classes in the morning and three in the afternoon . At noon , I have lunch at home . Classes are over at four fifteen in the afternoon . After class , we often play football in the afternoon . I go home at about five . I have supper at about six thirty in the evening . I do my homework at seven thirty . At weekend , I watch TV . I often go to bed at ten . I’m very happy . 根据短文的意思，选择正确的答案。 （）1. Jack is a pupil in ______ . A. Class One B. Grade One C. Class Two D. Grade Two （）2. Jack gets up at _________ in the morning . A. five B. six C. seven D. eight （）3. After class they often play ______ on the playground . A. volleyball B. basketball C. football D. ping-pong

大一英语期末期末考试试题内含答案[1]

大学英语预备阶段练习（一） （Unit 1~4） ⅠWord Building Directions: Fill in the blanks with the correct form of the words given in the brackets. 1.Thank you very much for your ____ advice. I followed it and succeeded at last. (value) 2.His business has ____ rapidly since his brother came to help. (development) 3.After a two-day discussion, we finally found a ____ to the difficult problem. (solve) 4.Prices ____ high for quite a while .People began to complain about it. (remaining) 5.I don’t think it ____ to finish all the work today. We can go on with it tomorrow.(necessity) 6.It is obviously not ____ to leave a 3-year-old boy alone at home. (properly) 7.The tourists saw a beautiful ____ when they climbed onto the top of the mountain.(scene) 8.Traveling in the desert is a challenging ____ to most people. ( inexperience) 9.____, I don’t think it possible to finish the task in two days. (person) 10.The government must make sure that the economy is developed in the right ____.(direct) ⅡVocabulary and Structure Directions: Choose the best one from the four choices to complete the sentence. 11.The temperature ____ throughout the day in that part of the country. A. very B. remains C. differs D. varies 12.The game is full of violence and will certainly have a bad ____ on young players. A. meaning B. pain C. loss D. influence 13.The warm-hearted elderly lady downstairs is always ____ to help others. A. real B. ready C. practical D. polite 14.The question is ____ difficult in the exam today. Don’t you think so? A. therefore B. since C. rather D. otherwise 15.She used to live in a lovely ____ building near the sea. A. 3-story B. 3-stories C. 3-classed D. 3-classes 16.There are different ____ of transport in big cities for you to choose when you go out. A. means B. mean C. meanings D. meaning 17.They did not take a rest until the job was ____ finished. A. straightly B. specially C. completely D. fairly 18.The bookstore owner ____ the old magazines with a new ones to attract more readers. A. required B. reviewed C. repeated D. replaced 19.Would you like to buy the book? It is ____ reading. A. worthy B. firm C. further D. worth 20.She wears sunglasses to ____ her eyes from the sunshine in summer. A. prepare B. produce C. protect D. provide 21.We all like her very much for her pleasant ____: kind, gentle and warm-hearted. A. character B. chance C. chairman D. skills 22.All the students enjoyed the wonderful ____ by the professor that afternoon. A. discussion B. lecture C. advice D. solution 23.If you have confidence in yourself first, you will not be _______ by others easily. A.won B. doubled C. defeated. D. delayed 24.The little girl developed a strong _______ on her new friends.

【英语】中考英语阅读理解基础练习题含解析

一、中考英语阅读理解汇编 1．阅读短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。 For many years, sales of garlic in California had been little because of the much cheaper garlic from China. This year, however, California garlic sales are rising because American government increases tariffs （关税） on Chinese products. Christopher, a garlic grower in California, is manager of his company and he said, "In a perfect world, we would love to see the tariffs on China." Tariffs on Chinese garlic rose from 10% to 25% on May 9, 2019, and the reason is that U.S President Donald Trump increased tariffs on Chinese products worth of $200 billion. Since then, Chinese buyers have almost stopped buying soybeans from the United States and American soybean farmers are now getting worried. Not everyone likes the garlic tariffs in the U.S. Last July Christopher expressed his support on Trump's policy （政策）. However, officials from McCormick and Company Inc. didn't agree with the policy. McCormick's CEO, Lawrence told Reuters （路透社）that without Chinese garlic America can't go. Actually ,the trade war （贸易战） between China and America is a sign of American hegemony （霸权）, and it will destroy American economy and U.S government will lose its trust from other countries in the world. （1）From the passage we infer （推理） that ________. A. America is buying garlic from China as much as before B. American soybean farmers make money as much as before C. China is still buying crops from America as much as before D. Garlic growers in California are making more money than before （2）Why is less Chinese garlic bought by America this year? A. Because enough garlic is grown in California. B. Because American government has increased tax （税收） on Chinese garlic. C. Because China is not buying soybeans from America. D. Because companies support American government. （3）What does the underlined word "it" in the last paragraph refer to? A. China B. the trade C. American hegemony D. a sign （4）How much tariff did American government increase on Chinese garlic On May 9, 2019? A. 15％ B. 25％ C. 10％ D. 35％ （5）According to the passage, who disagrees with the America policy of having tariffs on Chinese products?

六年级英语阅读理解100篇(含答案)

六年级英语阅读理解题及答案 （共16篇） 目录 六年级英语阅读理解题及答案1 (2) 六年级英语阅读理解题及答案2 (2) 六年级英语阅读理解题及答案3 (4) 六年级英语阅读理解题及答案4 (4) 六年级英语阅读理解题及答案5 (5) 六年级英语阅读理解题及答案6 (7) 六年级英语阅读理解题及答案7 (7) 六年级英语阅读理解题及答案8 (9) 六年级英语阅读理解题及答案9 (10) 六年级英语阅读理解题及答案10 (11) 六年级英语阅读理解题及答案11 (12) 六年级英语阅读理解题及答案12 (13) 六年级英语阅读理解题及答案13 (14) 六年级英语阅读理解题及答案14 (15) 六年级英语阅读理解题及答案15 (16) 六年级英语阅读理解题及答案16 (17) 六年级英语阅读理解题答案汇总1——16 (19)

六年级英语阅读理解题及答案1 There are forty-two students in our class . There are also two American boys . They are Jack and Mike . They are our good friends . They like watching TV ,but they don’t like playing basket-ball .They often go to school by bike . And I often go to school on foot . There is one English girl in our class . Her name is Lucy . She likes playing basketball and she also likes swimming . She usually does her homework in the evening . She often watches TV on Saturday afternoons . She is my good friend . All of the Chinese students are Yong Pioneers . 根据短文内容，判断正（T）误（F）。 ( ) 1. There are thirty-nine Chinese students in our class . ( ) 2. There are two American girls and one English boy in our class . ( ) 3. Jack and Mike are our good friends . ( ) 4. Jack and Mike like playing basketball . ( ) 5. Lucy often does her homework on Saturday afternoons . 【答案】TFTFF 六年级英语阅读理解题及答案2 My name is Jack . I am a pupil of Grade One . I’m in No.1 Middle School . On weekdays I get up at six o’clock . I have breakfast at seven and then I go to