精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

精英家教網 > 高中英語 > 題目詳情
閱讀理解。
                                                          Passwords are no safeguards
      Typing your password or credit card number into a computer is a moment's work. But if you think your
personal details disappear as soon as you hit the Return key, think again: they can sit on the computer's hard
disk for years waiting for a hacker (黑客) to take them.
      As people spend more time on the web and hackers become more experienced, the dangers of storing
personal information on computers are growing by the day, security experts say. There are some safe-guards,
such as never allowing your computer to store your passwords. But even that in no guarantee of security.
      When you type in a password, it is stored in random access memory (RAM), where it is held temporarily
until other data overwrites it or the computer is switched off. 
      But every so often, the computer copies the contents of its RAM onto hard disk, where it is easy to prey
(捕獲) for a hacker, who can read it directly or design a worm to e-mail it back. The longer sensitive data
stays in RAM, the more likely it is to be copied onto the disk, where it stays until it is overwritten-which might
not happen for years.
      Tal Garfinkel and colleagues from Stanford University have created a software tool which simulates (模擬)
the workings of a complete computer system. Within the simulation, sensitive data can be tagged and then
tracked as it passes through the system. Next, Garfinkel and his team simulated computers running common
software that regularly handles passwords or secret personal information, such as Internet Explorer, the
Windows login script and Apache server software.
      In a paper to be presented, they conclude that the programs took no measures to limit the length of time
the information is kept. Some of the tested software even copied the sensitive information, obviously without
restraint (阻攔).
1. What does the passage mainly talk about?
[     ]
A. It's important to set passwords to your computer.
B. Passwords help keep your personal information.
C. It's unsafe to store personal information on computers.
D. There are some safeguards for your personal information.
2. Hackers usually get others' information from _____.
[     ]
A. RAM
B. the hard disk
C. a worm
D. the e-mail
3. Garfinkel and his colleagues created a software tool to _____.
[     ]
A. find out how hackers steal personal information
B. protect personal information from being stolen
C. see how a complete computer system works
D. tag and track sensitive data on the computer
4. Talking about computer safety, which of the following the writer would probably suggest?
[     ]
A. People should stop using computers.
B. Hackers should be heavily punished.
C. Better computer programs are needed.
D. Program developers are to blame.
練習冊系列答案
相關習題

科目:高中英語 來源:2010年普通高等學校招生全國統一考試、英語(江西卷) 題型:050

閱讀理解

  Modcm inventions have speeded up people's lives amazingly.Motor-cars cover a bundred miles in little more than an hour.Aireraft cross the world a day, while computers operate at lightning speed.Indeed, this love of speed seems never-ending.Every ycar motor-cars are produced which go even faster each new computer boasts(吹噓)of saving preeious seconds in handling tasks.

  All this saves timc, but at a prick.When we lose or gain half a day in speeding aeross the world in an airplane, our bodies tell us so.We get the uncomfoerable feeling known as jet-lag; our bodies feel tlru they have been left bebind in anot ar nine zoors Again pending too long at compulers resul's in painti ninrts and fingers.Mobile phones also to dange according to some seientists; too much uss may thesmit h bul radiation into our brains, a we do not like to think about.

  Howave, what do we do with the time we have saved?Certainly not or so it seems.We are so accustomed to constant activity that we find it difficult to sit and do nothing, or even just one thing at a time.Pcrhaps the days are long gone when we might listen quietly to a story on the radio, letting imavination take us into another world.

  There was a time when some people's lives were devotcd simply to the cultivation of the land or the eare of eattle.No multi-tasking there; their lives wenl on at a much gentler pace, and in a familiar pattern.There is much that we might envy about a way of life like this.Yet before we do so, we must think of the hard tasks our ancestors faeed;:they farmed with bare hands, often lived close to hunger, and had to fashion tools from wood and stone.Modem machinery has freed peope fre that primitive existcnee.

(1)

The new rooucts opcome more and more time-saving beeause.

[  ]

A.

our lose e u speed uts never-ending

B.

mo is liwhcd

C.

shi pnces are increasingly high

D.

the manufacturers boast a lot

(2)

What does“the days”in Paragraph 3 refer to?

[  ]

A.

I maginary life

B.

Simple life in the past

C.

Times of inventions

D.

Time for constant activity

(3)

What is the author's attitude towards the modem teehnology?

[  ]

A.

Critical

B.

Objective

C.

Optimistic

D.

Negative

(4)

What does the pa mge mainly diseuss?

[  ]

A.

The present and pad times

B.

Machin and human beings

C.

Imaginations and inventions

D.

Modem teehnology and its influenec

查看答案和解析>>

科目:高中英語 來源:河北省邢臺一中2011-2012學年高二下學期第四次月考英語試題 題型:050

閱讀理解

  My father made a deal with me that he would match whatever I could come up with to buy my fir st car.From the time I wa s a saver.My allowance, back in tho se day s, wa s twenty five cent s a week.I grew up on a farm near a small town called Ventura.In tho se day s the area wa s mo stly agricultural.The climate wa s and still i s a s clo se to perfect a s you could get.I earned some of my money picking one crop or another.When I wa s about ten, a school friend' s family owned walnut orchard s(果園)and it wa s harve st time.She told me we could earn five dollar s for every bag of walnut s we picked.I certainly learned about picking walnut s that day.Not surprisingly, that wa s my fir st and la st time a s a walnut picker.

  In 1960 my grandmother pa s sed away.She left me 100 share s of AT&T.One hundred share s of stock don't seem like much today but back then tho se share s paid me$240 per year in dividend s(利息).That wa s huge for a kid my age.

  By the time I wa s seventeen.I had saved up $ 1, 300 and I knew exactly that I wanted.Ithink my father wa s somewhat suri sed when I announced I had saved up $ 1, 300 and wa s ready to buy my new car.I'll never forget the evening my father said, “Let' s go see about that car”.I wa s so excited.

  My father could have ea sily ju st given me the car but he alway s in si sted that hi s children work for what they got.Thi s wa s not a bad thing.I learned self-reliance.Self-reliance i s equal to freedom.Now that I think about it I need to be thanking my father.

(1)

Which one of the following s didn't belong to the saving of $1, 300?

[  ]

A.

Weekly allowance.

B.

Her earning s by picking crop s.

C.

Share s left by grandma.

D.

Money earned from selling share s.

(2)

The underlined part in the second paragraph probably meant ________.

[  ]

A.

she didn't have the chance of picking walnut s

B.

enough money had been earned for her car

C.

the work wa s too hard for children like her

D.

she had no time to do that again for some rea son

(3)

We can know from the pa s sage the author got her car at the age of ________.

[  ]

A.

16

B.

17

C.

18

D.

19

(4)

The purpo se of the author' s father doing like that wa s to ________.

[  ]

A.

give the author freedom

B.

be unwilling to buy the author a car

C.

teach the author to learn self-reliance

D.

give the author a big surpri se

查看答案和解析>>

科目:高中英語 來源:山西省平遙中學2009-2010學年度高二下學期期中考試英語試題 題型:閱讀理解


第三部分閱讀理解 (共20小題;每小題2分,滿分40分)
閱讀短文,從每題所給的四個選項 (A、B、C和D) 中,選出最佳選項.
A
Years of storms had taken their toll on the old windmill(風車). Its wheel, rusted and fallen, lay silent in the lush bluegrass.
  I hadn‘t walked across our old farm in fifteen years. Fifteen years ago,rain or shine, I used to walk this path each day to see Greta. She always made me smile, even after my sister and I had just had a big quarrel. I would help Greta with her chores. Then we would enjoy her delicious homemade chocolate cookies and ice cream. Being confined to a wheel chair didn‘t stop Greta from being a great cook.
  Greta gave me two of the greatest gifts I‘ve ever received. First, she taught me how to read. She also taught me that when I forgave Sister for our quarrels, it meant I wouldn‘t keep feeling like a victim(受害者). Instead, I would feel sunny.
  Mr. Dinking, the local banker, tried to foreclose on Greta‘s house and land after her husband passed away. Thanks to Pa and Uncle Johan, Greta got to keep everything. Pa said that it was the least he could do for someone talented enough to teach me to read!
  Soon folks were coming from miles around to buy Greta‘s homemade cakes, pies, breads, cookies, cider, and ice cream. Greta even had me take a big apple pie to Mr. Dinking who became one of her best customers and friends. That‘s just what Greta was.  She could turn anyone into a friend!
  Greta always said, "Dear, keep walking in sunshine!" No matter how terrible my day started, I always felt sunny walking home from Greta‘s house---even beneath the winter starlight.
  I arrived at Greta‘s house today just after sunset. An ambulance had stopped a few feet from her door, its red lights flashing. When I ran into the old house, Greta recognized me right away.
  She smiled at me with her unforgettable twinkling blue eyes. She was almost out of breath when she reached out and softly touched my arm. Her last words to me were "Dear, keep walking in sunshine!"
56. Which would be the best title for the passage?
A. What Greta taught me              B. Greta would never die
C. The past sunny days               D. Keep walking in sunshine
57. What can we know about Greta from the passage?
A. She was kind and forgiving         B. She was rich and generous
C. She was energetic and confidence    D. She was practical and helpful
58. The author used to go to see Greta every day mainly because _____.
A. Greta could treat the author with delicious food
B. Greta could give the author comfort
C. the author could learn how to read from Greta
D. the author could learn something valuable from Greta
59. What can we learn from the passage?
A. Greta lived a hard and lonely life.
B. Greta was loved and respected by all the people there.
C. Greta must be a relative of the author’s family.
D. The author had been out of touch with Greta for fifteen years.

查看答案和解析>>

科目:高中英語 來源:江西省模擬題 題型:閱讀理解

閱讀理解。
     One Tuesday evening in the beginning of the fall 1996 semester at Shippensburg University, sirens
(警笛) sounded.These sirens were not in celebration; they were a cry to the university that something
was wrong. A house, only one block away, was on fire.Nine of the university's students lived there.
From the minute the word got out that help was needed, it seemed like everyone showed up.The victims
of the fire were offered endless invitations for housing for the night.The very next day, everyone got into
gear
to do their part in helping them.Flyers (小傳單) were posted with items that were immediatelyneeded, just to get these students through this next couple of days.Boxes for donations and money jarswere
placed in every residence hall(學生宿舍).
     As a residence director,I went before the students in my hall to ask them to do what they could.I
knew that college students don't have much, but I asked them to clo their best: "Every little bit will help."
I really didn't think they could do much.l.was proved wrong.
     At the hall council meeting the night after the fire, my residents decided to have a wing competition,
where each wing of the building would team up to see who could bring in the most donations.l announced.
that the wing who won would receive a free pizza party.
     Thursday evening we announced over the PA system that we were beginning the wing competition.
Within minutes, the place exploded.The single large box that I had placed in the lobby (太廳) was
over-flowing.We quickly grabbed more boxes, and we watched in amazement as they, too, filled to the
brim.Members of the resident assistant staff and I began t.o count the items.l was astonished by what I
saw, andI was inspired by these kids.
     When we came to the final tally(得分), the winners tumed to me and announced that they would like
to donate their winnings as well.They wanted the victims of the fire to have their pizza party.
    Tears welled up in my eyes.I had watched these students jump to action, work tirelessly and donateall
that they could.And then, as if that were not enough, they handed over their reward.l was touchedand so
very proud of them.
1.The writer mainly wanted to       by the story.
A. tell us the suffering of nine of the college students from a fire
B. praise the college students helping the victims selflessly
C. tell us how successful the wing competition was
D. show he was deeply moved by the college students' action
2. The phrase "get into gear" in the second paragraph means       .
A. be eager
B. take action
C. be prepared
D. start working
3. At first, the residence director thought       .
A. it was impossible to expect the college students to donate anything
B. it was easy to collect a lot of donations from the college students
C. the college students would donate not much
D. the college students would donate all the items they had
4. The wing competition was held       .
A. on Tuesday evening
B. on Thursday
C. on Wednesday evening
D. the very next day
5. How did the resi ence director feel when he saw the brimful boxes?
A. Terrible.
B. Funny.
C. Surprised.
D. Serious

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

第三部分 閱讀理解 (共20小題;每小題2分,滿分40分)

閱讀短文,從每題所給的四個選項 (A、B、C和D) 中,選出最佳選項.

A

Years of storms had taken their toll on the old windmill(風車). Its wheel, rusted and fallen, lay silent in the lush bluegrass.

  I hadn‘t walked across our old farm in fifteen years. Fifteen years ago,rain or shine, I used to walk this path each day to see Greta. She always made me smile, even after my sister and I had just had a big quarrel. I would help Greta with her chores. Then we would enjoy her delicious homemade chocolate cookies and ice cream. Being confined to a wheel chair didn‘t stop Greta from being a great cook.

  Greta gave me two of the greatest gifts I‘ve ever received. First, she taught me how to read. She also taught me that when I forgave Sister for our quarrels, it meant I wouldn‘t keep feeling like a victim(受害者). Instead, I would feel sunny.

  Mr. Dinking, the local banker, tried to foreclose on Greta‘s house and land after her husband passed away. Thanks to Pa and Uncle Johan, Greta got to keep everything. Pa said that it was the least he could do for someone talented enough to teach me to read!

  Soon folks were coming from miles around to buy Greta‘s homemade cakes, pies, breads, cookies, cider, and ice cream. Greta even had me take a big apple pie to Mr. Dinking who became one of her best customers and friends. That‘s just what Greta was.  She could turn anyone into a friend!

  Greta always said, "Dear, keep walking in sunshine!" No matter how terrible my day started, I always felt sunny walking home from Greta‘s house---even beneath the winter starlight.

  I arrived at Greta‘s house today just after sunset. An ambulance had stopped a few feet from her door, its red lights flashing. When I ran into the old house, Greta recognized me right away.

  She smiled at me with her unforgettable twinkling blue eyes. She was almost out of breath when she reached out and softly touched my arm. Her last words to me were "Dear, keep walking in sunshine!"

56. Which would be the best title for the passage?

A. What Greta taught me              B. Greta would never die

C. The past sunny days               D. Keep walking in sunshine

57. What can we know about Greta from the passage?

A. She was kind and forgiving         B. She was rich and generous

C. She was energetic and confidence    D. She was practical and helpful

58. The author used to go to see Greta every day mainly because _____.

A. Greta could treat the author with delicious food

B. Greta could give the author comfort

C. the author could learn how to read from Greta

D. the author could learn something valuable from Greta

59. What can we learn from the passage?

A. Greta lived a hard and lonely life.

B. Greta was loved and respected by all the people there.

C. Greta must be a relative of the author’s family.

D. The author had been out of touch with Greta for fifteen years.

查看答案和解析>>

同步練習冊答案
精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区
国产一区 二区 三区一级| 欧美日韩国产电影| 亚洲激情成人在线| 欧美亚洲日本国产| 视频一区视频二区中文| 欧美一级免费观看| 韩国午夜理伦三级不卡影院| 国产三级欧美三级| 99久久免费精品高清特色大片| 亚洲精品一二三| 欧美乱妇15p| 极品少妇xxxx精品少妇| 中文幕一区二区三区久久蜜桃| 99re8在线精品视频免费播放| 亚洲国产精品天堂| 日韩精品一区二区三区视频| 国产91高潮流白浆在线麻豆| 亚洲精选免费视频| 日韩视频一区二区在线观看| 东方欧美亚洲色图在线| 亚洲老妇xxxxxx| 欧美一级一区二区| 粉嫩av一区二区三区| 一区二区三区在线播| 欧美一级淫片007| 成人av网址在线观看| 亚洲成av人片| 久久久久久久久伊人| 色综合久久99| 久久99精品久久久久婷婷| 国产精品乱码一区二三区小蝌蚪| 欧美三级视频在线| 国产精品一区二区视频| 一区二区三区资源| 精品国产欧美一区二区| 91偷拍与自偷拍精品| 免费成人在线影院| 日韩美女视频一区| 日韩欧美国产成人一区二区| aaa国产一区| 日韩av午夜在线观看| 国产精品天干天干在线综合| 欧美精品自拍偷拍动漫精品| 粉嫩av一区二区三区| 日韩精品免费专区| 国产精品成人在线观看| 88在线观看91蜜桃国自产| 成人动漫一区二区三区| 日本中文在线一区| 亚洲视频综合在线| 26uuu欧美| 欧美日韩精品高清| 成人av在线观| 久久99国产精品尤物| 一区二区三区久久| 国产欧美日本一区视频| 欧美一区二区网站| 色综合激情五月| 国产大陆亚洲精品国产| 日韩激情中文字幕| 一区二区三区在线免费| 久久嫩草精品久久久精品一| 欧美日本视频在线| 91在线国产福利| 国产老女人精品毛片久久| 日韩精品视频网| 亚洲综合小说图片| 国产精品女上位| 精品88久久久久88久久久| 欧美日韩高清一区二区不卡| 99久久精品免费看| 国产suv一区二区三区88区| 美女一区二区三区| 亚洲一区二区三区国产| 亚洲欧洲成人自拍| 国产日韩精品一区二区三区| 日韩一区二区三区三四区视频在线观看| 91玉足脚交白嫩脚丫在线播放| 国内精品久久久久影院一蜜桃| 日日夜夜精品视频免费| 亚洲欧美激情在线| 中文乱码免费一区二区| 久久久久久久久久久久电影| 日韩精品一区二区三区视频| 9191精品国产综合久久久久久 | 99久久综合狠狠综合久久| 黑人巨大精品欧美一区| 日本在线观看不卡视频| 偷拍日韩校园综合在线| 亚洲一区二区欧美| 尤物av一区二区| 亚洲女同一区二区| 亚洲日本成人在线观看| 中文字幕在线一区免费| 国产精品视频一区二区三区不卡| 久久精品一区八戒影视| 欧美精品一区二| 精品久久人人做人人爽| 欧美大片国产精品| 日韩精品资源二区在线| 日韩午夜小视频| 欧美一区二区三区四区高清| 91精品国产综合久久久久久久久久 | 国产午夜精品久久久久久久| 精品国产免费人成在线观看| 欧美成人aa大片| 欧美mv和日韩mv国产网站| 日韩视频在线你懂得| 日韩女优制服丝袜电影| 日韩三级视频在线观看| 日韩欧美一区在线| 日韩免费视频一区二区| 欧美zozozo| 久久精品男人天堂av| 久久天天做天天爱综合色| 久久久五月婷婷| 久久亚洲捆绑美女| 欧美激情综合五月色丁香| 国产精品视频第一区| 亚洲欧美在线aaa| 一区二区三区四区五区视频在线观看| 亚洲黄网站在线观看| 亚洲图片自拍偷拍| 日韩精品一级二级| 另类小说色综合网站| 国产在线播精品第三| 丰满少妇在线播放bd日韩电影| kk眼镜猥琐国模调教系列一区二区| 99久久99久久综合| 在线视频观看一区| 9191国产精品| 久久噜噜亚洲综合| 国产精品天干天干在观线| 亚洲蜜桃精久久久久久久| 亚洲五月六月丁香激情| 蜜臀a∨国产成人精品| 国产黄色精品视频| 97se亚洲国产综合自在线不卡| 欧洲视频一区二区| 日韩视频在线观看一区二区| 久久久国产午夜精品| ㊣最新国产の精品bt伙计久久| 亚洲一级在线观看| 麻豆国产一区二区| 成人激情开心网| 欧美性色黄大片手机版| 日韩一级免费一区| 日本一区二区动态图| 亚洲午夜三级在线| 精品在线播放免费| 9久草视频在线视频精品| 欧美日韩精品一二三区| 久久天天做天天爱综合色| 亚洲欧美另类在线| 美国欧美日韩国产在线播放| 丁香天五香天堂综合| 欧美三日本三级三级在线播放| 欧美成人国产一区二区| 自拍偷拍欧美激情| 蜜桃91丨九色丨蝌蚪91桃色| 成人免费视频一区| 欧美日韩精品欧美日韩精品一综合| www国产亚洲精品久久麻豆| 中文字幕一区二区三区四区| 丝袜诱惑制服诱惑色一区在线观看| 国产精品一区二区久激情瑜伽| 色吊一区二区三区| 精品1区2区在线观看| 一级中文字幕一区二区| 国内偷窥港台综合视频在线播放| 91啪亚洲精品| 精品成人a区在线观看| 亚洲免费观看视频| 国内成+人亚洲+欧美+综合在线| 日本乱码高清不卡字幕| 久久伊人中文字幕| 亚洲超碰97人人做人人爱| 国产91精品精华液一区二区三区| 欧美乱妇20p| 综合av第一页| 国产一区二区中文字幕| 欧美日韩另类一区| 中文字幕欧美日本乱码一线二线| 亚洲123区在线观看| www.欧美色图| 精品日韩99亚洲| 亚洲伊人色欲综合网| 成人在线视频一区二区| 日韩午夜电影在线观看| 亚洲老妇xxxxxx| 成人免费观看av| 精品国产123| 亚洲chinese男男1069| 懂色一区二区三区免费观看| 日韩精品一区在线观看| 亚洲永久精品大片| 不卡在线视频中文字幕| 久久综合狠狠综合| 奇米精品一区二区三区在线观看| 91黄色免费网站|