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

Modern science suggests that a healthy lifestyle matters much to how long you can live and how well you live. Here are some tips for you to form a healthy lifestyle. Keep a scientific diet. Keep in mind that sugar can be removed from our diet completely. Over intake of sugar is one of the main reasons for getting fat. Over intake of protein or fat and low intake of fiber can also lead to getting fat. We need only a few grams of protein every day to keep our body in order. Like rain to crops, not the more the better. Be always in a good mood. There is a relation- ship between the mood and health. A good mood keeps you in high spirits. Thanks to the internet, we can enjoy and learn much without going out. Take a look at some online shops and pick up some bargains, enjoy music and movies and chat with some good friends. Just keep happy. Enough sleep. Two studies show the reasons why teens and adults don't have enough sleep. With teens, a major reason is mobile phone use; with adults, it's work. Meanwhile, a third study of young children shows that a lack of sleep in early life may lead to serious problems in future. Everyone needs at least 8-hour sleep to recover from tiredness and the hurt caused by hard work in the daytime. Proper exercise. Do exercise to keep away from fatness. Because of the quick pace of modern life, you don't have time to do exercise every day, but at least three times a week and 45 minutes each time. The author wrote the passage to   _  . A) tell the readers how to take proper exercise every day B) provide some advice on how to form a healthy lifestyle C) ask people to care about their health rather than their work D) make some surveys among those who have health problems
B

"You know, Chihuahuas aren't actual dogs. They're a kind of fox," announced a woman at a party. This woman entirely believed that Chihuahuas are the descendants   of the Fennec fox. Many people might believe this: Chihuahuas are similar to foxes in their appearance with long-haired Chihuahuas appearing almost indistinguishable from their wild counterparts . The idea that Chihuahuas are related to foxes isn't uncommon. Even the American Kennel Club, which is usually a highly respected source of information, accepts the belief and the similarity between Chihuahuas and Fennec foxes. Interesting as it is to imagine that Chihuahuas are a breed   of the fox, this idea simply can't hold water. Chihuahuas are, in fact, far more closely related to dingoes  or wolves than they are to Fennec foxes. Like other dogs, Chihuahuas are able to breed with other members within the same species. The Fennec fox is a member of a different species. Chihuahuas and Fennec foxes are fairly distantly related just like a cat and a tiger are. Their similarities occur only because of a phenomenon known as convergent evolution , in which animals develop similar features to meet similar biological needs.  A simple observation of geography further denies the idea that Fennec foxes and Chihuahuas are related. While the Fennec fox was living in the deserts of Africa, the Chihuahua came from Mexico, where it got its common name. Its closest living  s are other native Central and South American breeds. Its ancestor, the now nearly-extinct Mexican gray wolf, is also a much closer   to the Chihuahua than any other fox. It is common to consider the cute Chihuahua as a little Fennec fox adapted to life, but this theory is not true. Chihuahuas are domestic  dogs to the same degree as other dogs. Much as a Chihuahua might look like a fox, it is--and always will be--a dog. What can we learn about Chihuahuas from this passage? A) Chihuahuas are the descendants of the dingoe. B) The features of animals are usually hard to change. C) They are cute, long-haired and much like a fox. D) Chihuahuas came from Africa.
C

From early times, man has been interested in art. People have often worked together to collect and save the world's art treasures. Fine art treasures from many countries are kept in an art museum called the Louvre   in Paris, France. The works of art have been collected by the people of France over many centuries. It is the biggest art museum in the world. The Louvre has not always been a museum. The first building was a fort. In 1190, it was the king's castle with high walls and a round tower, which had a river around it to keep out the enemies. Over the years, the number of buildings around the castle grew. By 1350, the castle no longer needed a fort. The Louvre became a palace home for French kings and queens. During times of peace, new treasures were brought in. During the days of war, many treasures were stolen, and the buildings were damaged. When Francis I became king of France in 1515, he brought in many artists from other countries. One of the artists was Lenardo da Vinci from Italy. Da Vinci's "Mona Lisa" is the best known painting in the museum today. In 1793, the Louvre became a public museum. It is a place where art treasures are kept for everyone to enjoy. Every year millions of people from all over the world come to the Louvre to see the masterpieces. Most of works of art in the Louvre have been collected probably by   _  . A) the French people B) Francis I C) Leonardo da Vinci D) people of the world

A