B The New York Times, the Wall Street Journal, Financial Times and some other newspapers have published articles indicating that cyber attacks targeting Google and several other U.S. companies were fr 题目和参考答案——青夏教育精英家教网—

题目内容

The New York Times, the Wall Street Journal, Financial Times and some other newspapers have published articles indicating that cyber attacks targeting Google and several other U.S. companies were from China. Such accusations are biased(有偏见的).

These articles take as evidence that hackers’ IP addresses could be traced back to two schools in China. However, it is common sense that hackers can attack by controlling computers from anywhere in the world. This fact also explains why hackers are hard to be tracked down.

Computers in China are easy to be controlled by hackers as the majority of Chinese Internet users lack security awareness and adequate protection measures.

The hackers’ IP addresses could by no means vindicate(证明正确)the newspapers’ accusations that the attacks were carried out by Chinese citizens or from within China.

The New York Times says one of the schools from which the cyber attacks were said to originate has military support. Another school “has received financing from a high-level government science and technology project.”

The New York Times went to great lengths to mention that “graduates of one of the school’s computer science department are employed by the local military each year.” The paper, however, did not care to tell its readers that a school in China does not need to have any special relationship with the military to have its graduates in uniform. It is also true in the United States, where the New York Times is based.

China’s attitude toward cyber attacks has been unequivocal and has adopted laws against such crimes, as China is one of the countries that suffer from cyber attacks.

The U.S. government, on the other hand, takes an uncertain attitude toward cyber attacks. According to media reports, the U.S. Homeland Security and Defense departments have both openly employed hackers.

People with a “blackhat perspective” and knowing how to “do threat modeling” are the best choices, said Philip Reitinger, Department of Homeland Security deputy undersecretary, at an information security conference last October.

Cyber crimes could cause immense losses to individuals, companies and nations. Effective supervision(监督) and closer international cooperation are ways to improve cyber security. Finger pointing is not.

60. The passage is intended to tell us that __________.

A. IP addresses are often used as evidence to track down hackers

B. it’s not necessary for schools in China to contact the military

C. the U.S government openly employ hackers to deal with cyber attacks

D. the accusations of cyber attacks against China are unreasonable and irresponsible

61. The underlined word “unequivocal” in Paragraph 7 means __________.

A. clear　　 B. negative 　　 C. supportive D. vague

62. We can conclude from the passage that __________.

A. international cooperation and finger pointing are called for to ensure cyber safety

B. people skilled at doing threat modeling don’t have security awareness

C. some hackers work for the U.S. Homeland Security and Defense departments

D. hackers are difficult to catch because they can cause lots of losses to people

63. The passage is organized by __________.

A. raising questions and analyzing figures

B. making descriptions and giving explanations

C. presenting opinions and providing arguments

D. giving definitions and explaining details

60---63 DACC

练习册系列答案

暑假轻松假期中国海洋大学出版社系列答案

高效课堂系列暑假作业新疆青少年出版社系列答案

金鑫教育过好假期每一天团结出版社系列答案

孟建平准备升级小学暑假衔接浙江工商大学出版社系列答案

金榜题名大暑假小一轮山东出版传媒股份有限公司系列答案

轻松暑假复习加预习中国海洋大学出版社系列答案

走进暑假假期快乐练电子科技大学出版社系列答案

快乐宝贝假期园地暑假系列答案

暑假接力棒南京大学出版社系列答案

数学奥赛暑假天天练南京大学出版社系列答案

相关题目

In the atmosphere , carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun’s rays to enter but prevents the heat from escaping.

According to a weather expert’s prediction, the atmosphere will be 3 ℃ warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several meters and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere(半球), possibly resulting in an alteration of the earth’s chief food growing zones.

In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming, in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels.

Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth

However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude, therefore, that up to now natural influences on the weather have gone beyond those caused by man. The question is: Which natural cause has most effect on the weather?

One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot sports and ‘cold” spots( that is, the relatively less hot spots) on the sun. As the sun rotates(使旋转), every 27.5 days, it presents hotter or colder faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth’s atmospheric pressure, and consequently on wind circulation. The sun is also changeable over a long term: its heat output goes up and down in cycles, the latest trend being downward.

Scientists are now finding shared relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is hot. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia(惯性) of the earth’s climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun’s fading heat.

It can be concluded that concentration of carbon dioxide in the atmosphere would ____.

A. mean a warming-up in the Arctic.

B. raise the temperature of the earth’s surface.

C. prevent the sun’s rays from reaching the earth’ s surface.

D. explain the cause of great changes in the climate in the northern hemisphere.

The article was written to explain____.

A. the greenhouse effect. B. the solar effects on the earth.

C. the causes affecting weather. D. the models of solar weather of solar weather interactions.

Although the fuel consumption is greater in the northern hemisphere, temperature there seems to be falling. This is ____.

A. mainly because the levels of carbon dioxide are rising

B. partly due to changes in the output of solar energy

C. possibly because the ice caps in the poles are melting

D. only due to the effect of the inertia of the earth’s climate

On the basis of their models, scientists are of the opinion that .

A. the climate of the world should be becoming cooler

B. the new Ice Age will be delayed by the greenhouse effect

C. the man-made warning effect helps to increase the solar effects

D. it will take thousands of years for the interia of the earth’s climate to take effect.

If the assumption about the delay of a new Ice Age is correct, ___.

A. ice would soon cover the northern hemisphere.

B. the greenhouse effect could work in favor of the earth.

C. the best way to overcome the cooling effect would be to burn more fuels.

D. the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly.

Hundreds of people lined up at Grand Central Terminal yesterday, but they

weren’t there to catch a train. They came to New York City’s famous railroad station to trade in old dollar bills for the new George Washington Presidential苊 1 coin.

The gold-colored coin is the first in a new series by the U.S. Mint（造币厂）that honors former U.S. Presidents. The Mint will issue(发行) four Presidential苊 1 coins a year through 2016. Like the popular 50 State Quarters program, which issues coins in the order in which each state joined the Union, Presidential苊 1 coins will come out in the order in which each President served. The George Washington coin is the first to be released. John Adams, Thomas Jefferson and James Madison coins will come out later this year.

The Presidential 苊 1 coins will be the same size and color as the Sacagawea Golden Dollar. However, there is an important difference. For the first time since the 1930s, there is an inscription（题字）on the edge of each coin. Each coin will show a different President on its face, or head side. It will also show the President’s name, the order in which he served and his years in office. The other side of the coin will show the Statue of Liberty and the inscriptions “United States of America” and “苊 1”.

There will be one Presidential苊 1 coin for each President, except Grover Cleveland. He will have two! Cleveland is the only U.S. President to have served two nonconsecutive（不连续的）terms.

The last President scheduled to get a coin is Gerald Ford because a President must have been dead for two years before he can be on a coin.

Why did people line up at the railway station?

A. To book train tickets. B. To exchange money.

C. To visit a coin show. D. To visit the station itself.

In which order will the Presidential苊 1 coins come out?

A. Each state joined the Union. B. Each President was born.

C. Each President took office. D. Each President died.

It can be inferred from the passage that .

A. there are no words on the Sacagawea Golden Dollar

B. the new coin can buy more than the old coin

C. the new coin takes on a white color

D. the Sacagawea Golden Dollar is bigger

Why will Grover Cleveland have two coins?

A. He served longer than any other President.

B. He is the most famous President in the U.S.

C. He is the only one who has served two terms.

D. He served two terms but not continuously.

Which of the following could be the best title of the passage?

A. Presidential苊 1 coin issued.

B. Different ways to honor Presidents.

C. The differences between Presidential苊 1 coin and other coins.

D. Collections of old dollar bills.

Many college-bound freshmen are worrying about more than just who their roommates will be this fall. They may also be nervous about the well-known fact that they are likely to gain weight this school year. Or will they? While many of us remember the extra weight that showed up right around the start of our college careers, we are not always clear on how much weight we realize gained or why.

Many nutrition experts and psychologists think that it is the change in environment and the stress of a new beginning that cause the typical college freshmen to gain extra pounds. As students start a new stage of their lives, many eat to deal with the stress of change or loneliness. Often, college students are making meals or choosing foods independently for the first time in their lives. If they live in the college dormitory, they have a wide variety of foods to select from that may be higher in calories and fatter than the foods they consumed living at home. In addition, college social events usually center around food. I clearly remember sitting in my dorm cafeteria for two or three hours on a Saturday morning socializing with my new friends. Instead of eating only one meal, we would start with breakfast, eat throughout the duration of our socializing, and finish with lunch. Food also makes an appearance after late-night parties, as part of a school day, or simply to break the monotony(单调 ).

So will this year's typical freshmen really gain 15 pounds? According to a 2006 Tufts University study, students enrolling in college this fall will gain weight, but maybe not the assumed 15 pounds. Based on the students surveyed, the study found that men can expect to gain an average of 6 pounds and women an average of 4.5 pounds during the freshman year.

According to the passage, it is obvious that __________.

A. the foods the freshmen had at home may be healthier than those in the dorm cafeteria

B. to break the monotony, the students should start with breakfast, and finish with lunch

C. the students should eat to deal with the stress of change or loneliness in new situations

D. the boys may gain less pounds than the girls during the first year in the college

Nutrition experts and psychologists think that __________.

A. students should get used to the stress of change through foods they had at home

B. the new environment and the stress have something to do with the students' extra pounds

C. students should know in what way they gain so much weight

D. choosing foods independently can make people lose weight naturally

From the writer's experience, the writer thinks that ____________.

A. foods in the dorm cafeteria are all higher in calories and fatter

B. the best way to break the monotony is through breakfast, lunch and supper

C. students in college will gain an average of about 5.25 pounds every fall

D. social events in the college are usually celebrated around food

This passage is mainly about ______________.

A how and why the freshmen gain extra pounds

B. the experience of the freshmen in the college

C. the freshmen with trouble in a new environment

D. the views of the nutrition experts and psychologists about gaining weight

The Town of Pressure and the Town of Pleasure were neighbors but had nothing in common. Residents built walls to influence from the other town.

In Pressure, struggled to be the very best. When women gave birth, they would to have the baby with the loudest cry. There was violent competition in every aspect of life. Because was the index (指数) of success, people were busy making money, with for relaxation. Some young people couldn’t bear the intensity and resorted to drink or drugs to escape.

_ , over in Pleasure, the motto was “As long as you like it, do it.” People grew up without and do anything they liked. Children played computer games day and night. At school, teachers didn’t _ whether students showed up or not. Workers might sit around the office sipping coffee and doing nothing. the lack of regulations, nobody worried about losing their jobs. It was that mattered. No one had the thought of moving forward, either for themselves or for the town. The computers they used were models from Pressure.

Some of the young were addicted to because of the meaninglessness of their lives. Then, people in the two towns began asking themselves, “What is for?” But, just before life in the two towns completely , there came a saint – Mr. Reason. He went from door to door, talking with people and giving advice. People in Pressure learnt to be with what they had, while people in Pleasure began to make plans. They the walls between them and built a road to connect the two. The towns’ people came to realize the truth—there is no space between Pressure and Pleasure if they don’t go to extremes.

1.A. connect B. keep C. keep out D. prevent

2.A. everyone B. anyone C. nobody D. somebody

3.A. have B. like C. compete D. try

4.A. health B. joy C. children D. wealth

5.A. seldom B. always C. hardly D. sometimes

6.A. much time B. no reason C. many reasons D. no time

7.A. Meanwhile B. At the same time C. Therefore D. Virtually

8.A. pleasure B. pressure C. work D. happiness

9.A. must B. need C. could D. dared

10.A. know B. find C. recognize D. care

11.A. in the morning B. in the evening C. all day long D. in the afternoon

12.A. Thanks to B. Regardless of C. Owe to D. According to

13.A. money B. time C. pleasure D. pressure

14.A. strongest B. slightest C. most D. smallest

15.A. the old B. the new C. the best D. the same

16.A. books B. work C. money D. drugs

17.A. pressure B. life C. pleasure D. money

18.A. improved B. failed C. succeeded D. lived

19.A. content B. surprised C. patient D. angry

20.A. built B. put down C. pulled down D. set up

Particles from car exhausts generate more persistent clouds but less rain, new research suggests. Furthermore, putting more of these particles into the atmosphere reduces the low-level winds, which could reduce the amount of wind power available in very polluted regions. The dry but populated regions may therefore suffer a triple blow as a result of vehicle pollution：less water, less hydropower and less wind energy.

Scientists studied the effects of aerosol（浮质）pollution from cars and industry. They correlated satellite data on wind speeds and the amount of aerosol particles in the atmosphere above the South Coast Basin in California and above China. Results showed that higher concentrations of aerosols were closely associated with slower ground winds. Scientists then used computer models to support the idea that there was a cause and effect relationship behind this correlation.

Particles floating in the atmosphere block energy from the Sun, preventing it from warming the surface of the Earth. Cooler surface temperatures during the day means the low—level and slow moving air does not rise up and mix with the faster winds at higher altitudes. Slower winds also induce less evaporation from oceans, rivers and lakes. And finally, once clouds have formed, they store less moisture in the form of rain. This is because raindrops form around small particles— dust, for instance, or pollution. With more particles in the atmosphere, it takes longer for enough water to condense（凝结）onto a particle to form a raindrop. And if the cloud of fine droplets（小滴）moves to a drier area before its would-be rain can rail, the moisture evaporates once more and the cloud disappears.

Scientists note their new work does not contradict previous findings that suggest global warming might lead to more tropical storms, because there is far less particulate（微粒的）pollution over the oceans.

60. The first paragraph mainly talks about .

A. the results of vehicle pollution

B. an introduction to particles from car exhausts

C. less wind energy in polluted regions

D. less water caused by vehicle pollution

61. From this passage we can learn that .

A. scientists supported their idea by using material models

B. the new study is contrary to the previous findings

C. if there are more particles in the atmosphere, there will be more raindrops

D. there is a cause and effect relationship between wind speeds and particle pollution

62. The underlined word “induce” in Paragraph 3 most probably mean _ .

A. reduce B. persuade C. cause D. produce

63. What’s the best title for the passage?

A. Pollution and Global Warming B. Car, Wind and Rain

C. Industry Pollution D. How Rain Forms

试题分类