People tend to think of computers as isolated machines, working away all by them
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People tend to think of computers as isolated machines, working away all by themselves. Some personal computers do without an outside link, like someone"s secret cabin in the woods. But just as most of homes are tied to a community by streets, bus routes and electric lines, computers that exchange intelligence are part of a community local, national and even global network joined by telephone connections.
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 (流氓) loose in a computer system called hacker is worse than a thief entering your house. He could go through anyone"s electronic mail or add to, change or delete anything in the information stored in the computer"s memory. He could even take control of the entire system by inserting 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.
Hacking, our electronic-age term for computer break-in is more and more in the news, intelligent kids vandalizing（破坏）university records, even pranking (恶作剧) about in supposedly safeguarded systems. To those who understand how computer networks are increasingly regulating life in the late 20th century, these are not laughing matters. A potential for disaster is building: A dissatisfied former insurance-company employee wipes out information from some files; A student sends out a "virus", a secret and destructive command, over a national network. The virus copies itself at lightning speed, jamming the entire network thousands of academic, commercial and government computer systems. Such disastrous cases have already occurred. Now exists the possibility of terrorism by computer. Destroging a system responsible for air-traffic control at a busy airport, or knocking out the telephones of a major city, is a relatively easy way to spread panic. Yet neither business nor government has done enough to strengthen its defenses against attack. For one thing, such defenses are expensive; for another, they may interrupt communication, the main reason for using computers in the first place.
59. People usually regard computers as .
A. a small cabin at the end of a street
B. part of a network
C. means of exchanging intelligence
D. personal machines disconnected from outside
60. The writer mentions “ a thief ”in the second paragraph most probably to .
A. look into the case where hackers and thieves are the same people
B. demand that a computer network should be set up against thieves
C. tell people that thieves like to steal computers nowadays
D. show that a hacker is more dangerous than a thief
61. According to the passage , a hacker may do all the damages below EXCEPT .
A. destroying computer systems .
B. creating many electronic-age terms .
C.. entering into computer systems without being discovered
D. attacking people’s e-mails
62. By saying “ Now exists the possibility of terrorism by computer ”(the underlined ) the writer means that .
A. students who send out a “ virus ”may do disastrous damages to thousands of computers
B. some people may spread fear in public by destroying computer systems
C. some employees may erase information from some files
D. some terrorists are trying to contact each other using electronic mails |
答案
| DDBB |
解析
| 略 |
举一反三
The United States is on the verge of losing its leading place in the world’s technology. So says more than one study in recent years. One of the reasons for this decline is the parallel decline in the number of U.S. scientists and engineers.
Since 1976, employment of scientists and engineers is up 85 percent. This trend is expected to continue. However, the trend shows that the number of 22-year-old the near term source of future PhDs is declining. Further adding to the problem is the increased competition for these candidates from other fields law，medicine，business，etc. While the number of U.S. PhDs in science and engineering declines，the award of PhDs to foreign nationals is increasing rapidly.
Our inability to motivate students to pursue science and engineering careers at the graduate level is compounded because of the intense demand industry has for bright Bachelor‘s and Master‘s degree holders. Too often，promising PH.D.candidates, confronting(面临) the cost and financial sacrifice of pursuing their education, find the attraction of industry irresistible.
67. The U.S.will come to lose its leading place in technology probably because ________.
A. scientists and engineers are not employed
B. the number of PH.D. degree holders is declining
C. the number of scientists and engineers is decreasing
D. the number of 22-year-ilds is declining
68. The field of science and engineering is facing a competition from ________ .
A. postgraduates B. technology
C. such fields as law，medicine and business
D. foreign nationals
69. Large-scale enterprises now need _______.
A. new inventions B. engineers
C. advanced technology D. bright graduates and postgraduates
70. PH.D. candidates "find the attraction of industry irresistible" means that _________.
A. they cannot work for industry any longer
B. they find industry is attracting more and more college students
C. they don’t think they can prevent themselves from working for industry
D. they cannot resist any attraction from all sides |
第三节完形填空(共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
It used to be our custom to take handmade baskets to friends on May Day．We would 21 baskets on a doorstep, knock on the door, and then run away as fast as our legs could 22 us．It was delightful to peer (窥视) around a bush and watch our friends open their 23 and pick up the colorful gift, 24 who had left it out for them.
I clearly 25 the May Day of the year when I turned ten．That year I was faced with a(an) 26 involving one of my dearest friends, Pam．We had studied and 27 together nearly every day, but things 28 after a new family had moved into our small town．Pam was spending more and more time at their house and I felt 29 and left out.
When my mother asked me 30 I was going to take a May Day basket to Pam’s house, I responded 31 , “Absolutely not! I hate Pam.” I began to cry.
Mom wiped away my 32 and told me that things and people change．She explained that one of the greatest things friends can do is to give each other a 33 to grow, to change and to develop, and that it’s 34 for one’s friends to spend time with other people.
I 35 decided to give Pam a basket as a sign of forgiveness, and asked my sister to help me do it．As we watched from our 36 place, Pam picked up the basket and said loudly enough for us to hear, “Thank you, Susie, I hoped you wouldn’t 37 me!”
That day, I made a 38 that changed my life: I decided to hold my friends tightly in my heart, but 39 in my expectations of them, allowing them 40 to grow and to change—with or without me.
21．A．hang B．place C．throw D．give
22．A．send B．transport C．carry D．support
23．A．baskets B．eyes C．arms D．doors
24．A．asking B．wondering C．mentioning D．informing
25．A．remember B．experience C．remind D．grasp
26．A．plan B．task C．opportunity D．challenge
27．A．lived B．played C．traveled D．discussed
28．A．failed B．finished C．changed D．proved
29．A．started B．hurt C．paid D．injured
30．A．why B．what C．whether D．how
31．A．anxiously B．weakly C．angrily D．happily
32．A．tears B．thoughts C．unhappiness D．freedom
33．A．reason B．means C．chance D．direction
34．A．able B．impossible C．acceptable D．doubtful
35．A．nearly B．hardly C．finally D．generally
36．A．covering B．hiding C．cheering D．passing
37．A．miss B．forget C．disturb D．control
38．A．decision B．mistake C．suggestion D．difference
39．A．deeply B．shortly C．highly D．loosely
40．A．time B．space C．sense D．care |
Illegal removal of coral(珊瑚) along Sri Lanka’s coastline increased the amount of destruction on the island by last December’s tsunami, say researchers.
Harindra Fernando, a fluid dynamicist (力学家) at Arizona State University in Tempe, made the connection after a visit to his native Sri Lanka earlier this year．While serving as a scientific expert and translator for a BBC-documentary team, he chatted with locals who said they saw the tsunami turn sideways when it hit coral—which would have made it less powerful than in coral-free areas．Fernando linked this to trucks he had seen last year carrying piles of coral away from the sea.
Using the eyewitness reports, estimates (估算) of wave heights, and a series of divers to check the presence or absence of corals, Fernando and his colleagues produced a map of coral gaps and wave flooding along Sri Lanka’s southwest coast.
The tsunami reached significantly farther inland through the gaps: in one instance, the water traveled 1.5 kilometres long and knocked a passenger train off its tracks, killing 1,700．But only a few kilometers away, where the coral was still undamaged, the wave travelled just 50 metres inland and caused no deaths.
There is a similar phenomenon．In Nicaragua in 1992, a tsunami poured through a break in the coral reef made to let boats through．“Within this passage, water went one kilometre inland,” says Fernando．“But nearby, where the coral was undamaged, there were still beach umbrellas standing.”
In Sri Lanka, coral is illegally mined to provide souvenirs for tourists, or to be used in house paint．Coral harvesters sometimes blow it up with dynamite (炸药) in order to collect fish at the same time．Often, the reefs in the best shape are those in front of hotels, as the hotel owners maintain them for the tourists．Fernando hopes that his findings will encourage the Sri Lankan government to enforce(实施) its laws against coral mining.
57．Harindra Fernando did all the following EXCEPT ________.
A．serving as a translator for a BBC-documentary team
B．helping the Sri Lankan government enforce its laws against coral mining
C．producing a map of coral gaps along Sri Lanka’s southwest coast
D．linking the coral removal with the destruction of Tsunami
58．The main idea of Paragraph 5 is that________.
A．undamaged coral can greatly decrease tsunami damage
B．coral-free area is a danger to passenger trains
C．in general, water travels 30 times farther inland in a coral-free area
D．it is urgent to enforce laws against coral mining
59．Which of the following may NOT be the cause of coral gaps?
A．Boat passages． B．Tourists’ sightseeing．
C．Fish collecting． D．Tourists’ souvenirs.
60．Which of the following would be the best title for the passage?
A．Harindra Fernando, a Great Environment Protector
B．Stop Using Coral as Souvenirs
C．Coral Cried “Help! Help!”
D．Coral Mining Enhanced (加剧) Tsunami Damage |
Country music is one of the most popular kinds of music in the United States today because it is about simple but strong human feelings and events-love, sadness, good times, and bad times. It tells real-life, stories and sounds the way people really talk. As life becomes more complicated(复杂), it is good to hear music about ordinary people.
Country music, sometimes called country-western, comes from two kinds of music. One is the traditional music of the people in the Appalachian Mountains in the eastern Unite States. The other is traditional cowboy music from the west. The singers usually play guitars, and in the 1920s they started using electric guitars. At first city people said country music was low class. It was popular mostly in the South. But during World War II, thousands of Southerners went to the Northeast and Midwest to work in the factories. They took their music with them. Soldiers from the rest of the country went to army camps（军营）in the South. They learned country music. Slowly it became popular all over the country.
Today country music is also popular everywhere in the United States and Canada—in small towns and in New York City, among black and white, and among educated and uneducated people. About 1, 200 radio stations broadcast country music twenty-four hours a day. English stars sing it in British English, and people in other countries sing it in their own languages. The music that started with cowboys and poor southerners is now popular all over the world.
57. It can be learned from the passage that country music comes from_________-
A. the Northeast and Midwest
B. factories and army camps in the South
C. the Appalachian Mountains and the West
D. real-life stories in small towns
58. Before World War II country music was popular mainly in________.
A. the south B. the north
C. the Midwest D. the Northeast
59. During World War II many Southerners went to the Northeast and the Mid-west because____.
A. they wanted to take music with them
B. they wanted to make other people like country music
C. they wanted to work in the factories there
D. they wanted to make country music popular
60. Which of the following is NOT true according to the passage?
A. Country music is about human feelings and events.
B. Country music is sung by stars all in English.
C. Country music is popular among city people today.
D. City people didn’t like country music at first. |
A plane crash in Western Russian killed Polish President Lech Kaczynski and the other 96 political and military officials on board on April 10. The accident has led to huge national mourning in Poland. But it may provide an opportunity for reconciliation (和解) between Poland and Russia, countries that have a troubled relationship.
Many from the political elite were lost in the crash. Beside the president, the dead include the army chief of Staff, the head of National Security Bureau, the national bank president, the deputy foreign minister and other members of parliament.
The Polish delegation was heading to Russia to mark the 70 th anniversary of the Katyn Massacre (屠***) when the accident occurred. In 1940, about 22,000 Polish soldiers, intellectuals, and officials captured after the Soviet Army invaded Poland in 1939, were killed secretly by Soviet police in the forest of Russia’s Katyn.
The Katyn Massacre had been a sensitive topic between the countries. The former Soviet Union always denied responsibility for the massacre. It was not until 1992 that Russian released archived documents about the killing.
Katyn is merely a short chapter in Poland and Russia’s long and troubled history. In the 18 th century, along with Prussia, (then an important part of Germany) and Austria. Russia participated in three carve – ups of Poland. In 1795, after the third carve – up, the country was erased from the map of Europe. It was in 1918 that Poland regained its independence. But in 1939, at the beginning of the World War II, it was invaded by Germany and the Soviet Union under a secret pact. After the war, Poland became a communist country with close ties to the Soviet Union.
In 1989, Poland switched to capitalism and pursued a pro – West position. The most recent tension between the two countries was in 2008. That year, Poland decided to have a US missile shield (导弹防御系统) on its soil, while neighboring Russia threatened to aim missiles at Poland.
But the plane crash has created a chance for reconciliation, with Russia sharing the sadness of Poland. Russia has declared April 12 a day of mourning for the victims. Flags flew at half – mast in Moscow. And earlier on April 7, Russia Prime Minister Vladimir Putin became the first Russian leader to mark the anniversary of the massacre.
“I think it should improve relations between the two countries, as Russians feel our grief,” said Radek Sikorski, Pland’s foreign minister.
66．Put the following events in order of time.
①The Katyn Massacre
②Poland switched to capitalism.
③Russia divided Poland with Austria and Prussia.
④Poland became a communist country.
⑤Poland was invaded by the Soviet Army.
A．③①④⑤② B．③⑤①④② C．①③⑤④② D．①⑤②④③
67．After the accident, which of the following did Russia do to share the sadness of Poland?
A．Flags were lowed to half – mast in the capital city of Russia.
B．Russia threatened to aim missiles at Poland.
C．Russia declared the day when the accident happened a day of mourning for the victims.
D．Vladimir Putin marked the anniversary of the massacre.
68．Which of the following is TRUE according to the passage?
A．The Katyn Massacre was the very beginning of Poland and Russia’s trouble relationship.
B．In 1939 about 22,000 Polish soldiers, intellectuals, and officials were killed by Soviet police in the forest of Russia’s Katyn.
C．Altogether 96 political and military officials were killed in the accident.
D．The relationship between Poland and Russia has not always been tense since the three carve – ups of Poland in the 18 th century.
69．It can be conclude from the article that .
A．the relationship between Poland and Russia will be even tenser than before
B．Poland will cancel its plan to mark the anniversary of the Katyn Massacre
C．no Russian leaders have marked the anniversary of the massacre before, though Russia released the truth in 1992.
D．Poland will forgive Russians, for they showed great sympathy after the accident.
70．What would be the best title for the passage?
A．The troubled relationship between Russia and Poland.
B．Poland and Russia united by tragedy.
C．The 70 th anniversary of the Katyn Massacre.
D．A plane crash killing Polish president. |
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