China supports international efforts to secure cyberspace but believes each nation's "Internet sovereignty " must be respected, a top Chinese official said at a cyber security conference on Tuesday. "China, like many other countries, is very concerned about cyber security," said Liu Zhengrong, deputy director general of the Internet Affairs Bureau of the State Council Information Office. "China faces severe cyber security threats," Liu told participants here at the Worldwide Cyber Security Summit, a gathering of government and business leaders from 40 countries hosted by the EastWest Institute think tank. "International cooperation is much needed to safeguard international cyberspace," Liu said. But "Internet sovereignty of each country needs to be respected," the Chinese official added. "Different national and cultural conditions" should be taken into account. Liu declined to answer repeated questions about cyber attacks last year on Google which the Internet giant said originated in China and led to the California company's decision to reroute its searches through Hong Kong. "The Chinese government firmly opposes cyber attacks in any form and Chinese law clearly states that any hackers will be held responsible for their actions," he said. Liu said China itself is a "a major victim of cyber attacks and network viruses" and has laws in place to deal with hackers. "Internet-related crimes (in China) are showing a steady upward trend," Liu said. "We suffer big economic losses from hacking networks and viruses - around $1 billion dollars (6.8 billion yuan) a year." In 2009, Chinese law enforcement authorities investigated about 48,000 cases, a 37 percent increase over 2008, he said. While China has a dynamic Internet population of more than 400 million users and millions of bloggers, there is no "absolute freedom" on the Web, Liu said. "I don't think there is absolute freedom in this world," he said. "When you are speaking via the Internet you must obey laws and respect others' lawful rights." Last Thursday,... Which of the following is NOT the measure that China has taken to guarantee better Internet information and service management? A) Promoting real-name registration for Internet use. B) Promoting real-name registration for cell phone use. C) Tightening State Secrets law to stop leaking State secrets. D) Monitoring for harmful information and blocking overseas hostile forces.
D


Visitors worry that London is an expensive city but there really are so many free things to do here. The following ideas should get you started. All of London's major museums are free, but most offer some special exhibitions for a fee. My favorite is the Museum of Londonwhere you can learn the history of London from Roman times to today. And I love theGeffrye Museumwhich shows English domestic interiors and helps bring to life what it was really like to live in London. I regularly hear people tell me theQueen Mary's Rose Gardens in Regent's Parkis their favorite spot in London, and who am I to argue? I would also recommend St. James's Park as it offers one of the best views ofBuckingham Palace. Hyde Park is enormous and Kensington Gardens nearby includes the ever popular Diana Memorial Playgroundand thePeter Pan Statue. No visit to London is complete without seeing this military tradition. The Queen's Guard in London changes in the Forecourt inside the gates ofBuckingham Palaceat 11.30am every day in the summer and every other day in the winter. Get there early and view the spectacle from outside the front gates. Trafalgar Square is one of Britain's greatest visitor attractions and was designed by John Nash in the 1820s and constructed in the 1830s. This iconic square has many sights to see including Nelson's Columnand theNational Gallery. It is both a tourist attraction and the main focus for political demonstrations. Every December, Norway donates a marvelous Christmas tree, to thank Britain for liberation from the Nazis. The writer wrote the passage to   _  . A) compare some free places in London. B) advertise some free places in London. C) recommend some free places in London. D) expose some free places in London.
C


Q: Mark Twain, the famous American writer, was once traveling in France .He went by train to Dijon. He was very tired and wanted to sleep. He therefore asked the conductor to wake him up when the train came to Dijon But first he explained he was a very heavy sleeper,"I may bossibly protest loudly when you try to wake me up,"he said to the conductor. "But don't take any notice of what I say. Just put me off the train anyway." Then Mark Twain went to sleep. Later, when he woke up it was night time and the train had reached Paris already. He realized at once that the conductor had forgotten to wake him up at Dijon. He was so angry that he ran to the conductor and began to shout at him. "I have never been so angry in my life,"Mark Twain said. The conductor looked at him calmly ."You are not half so angry as the American whom I put off the train at Dijon,"he said. Mark Twain knew that he was a heavy sleeper, so_. A) he protested loudly to the conductor B) he did not sleep before he arrived at Dijon C) he told the conductor to wake him up no matter how loudly he might protest D) he slept lightly that time
A: C


Hu Li's heart sank due to the color of the air.Driving 140 kilometers from Tianjin City to Beijing last week,she held her breath as the air became a charcoal grey haze .The 39yearold businesswoman has lived in Beijing for a decade,and this past month,she said,brought the worst air pollution she has ever seen.It gave her husband a cough and left her sevenyearold daughter housebound ."My husband as well as I is working here,so we have no choice," she said."But if we had a choice,we'd like to escape from Beijing." The extended heavy pollution over the last month,which caused punishment in return for a day last week-called the "airpocalypse" by internet users- has largely changed the way that Chinese think about the country's air.On one day,pollution levels were 30 times higher than levels considered safe by the World Health Organization (WHO).Flights were cancelled.Roads were closed.One hospital in east Beijing reported they had treated more than 900 children for breathing issues.Bloomberg found that for most of January,Beijing's air was worse than that of an airport smoking area. The smog's  most threatening aspect is its high concentration  of PM 2.5 - particulate matter that is small enough to breathe deep into the lungs and enter the bloodstream,causing breathing infections,lung cancer and possibly damaging children's development.The WHO has estimated that outdoor air pollution accounts for two million deaths per year,65% of them in Asia. From the passage we know high concentration of PM 2.5  _  . A) can lead to choke B) can cause heart cancer C) will damage children's development D) will damage people's organ

D