When it comes to the Internet, people talk about the password most. Actually, it's been under fire for a long time. Research has shown that passwords are not a very good way to protect sensitive information.

    People would use some random characters, numbers and symbols. Furthermore, a unique password would be used for every site or application the user uses. Unfortunately, the longer and more complex passwords become, the more people are likely to forger them. Therefore, they use the same password for every service or application. These are all big no-noes and essentially defeat the purpose of a password.

    Google is trying to kill off passwords on Android devices by introducing the Trust API, which does what simple passwords cannot and gives developers a framework for securing their application using a number of security systems and metrics(衡量标准)on the device. A Trust Score will be generated based on a number of metrics including your device location, face scanning, fingerprints, and the things like your typing speed or the way you speak. Taken one at a time, these metrics are not secure. But taken together, these metrics will help recognize the real “you”.

    The good news is that Google has already been testing this on real world data. Google has proven the Trust API works. Next Google will run tests will some banks to see if the Trust API meets their needs before rolling out the system on Android phones later. It may take another year for apps and popular sites to start using the Trust API.

    This is a pretty exciting change. Passwords have been around for a lone time. Although the security of systems has been improved, the usability of systems hasn't been proved much. Google appears to have the best of them. Maybe that never-ending conflict between security and convenience will be able to take a break once the Trust system comes out.

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    My son was a second-grader. He went to school by bus every day. He was the first student on in the morning, as we were farthest from school, and the last student off in the evening. I was a teacher myself and it was a comfort to realize the school staff (职员) were all working as hard as I was to provide a safe learning environment.

    One day I came home from work and waited for my s on to get home for a long time. Then I called the school. “Perhaps he's just a bit late,” said the secretary. “I will call the driver to see if those children are home.” A few minutes later, I answered the phone to hear that the other students were home. Then I called his friends' parents, to see if perhaps he had gotten off at their stop to play. The answers were all “No.”

    By that time, it was dark and I was scared. My home was in the mountain areas, and it was said that a wolf had come up somewhere. My husband wasn't at home, so I forced myself to calm down and decided to go out to look for him. I was about to go out when the telephone rang; it was from the driver. “He's okay,” I heard. “He was asleep on the seats in the back, under a couple of jackets. Since it's dark, can he spend the night with my family?”

    I was relieved and agreed. Since my son had a great adventure, the school started giving a copy of the list to the driver, so he could check off the children's names when they got off the bus. I think highly of the school for taking the cautionary (警戒的) step ahead; it is a sign of their concern for students, parents, and staff.

    When you go to St. Petersburg, the number of attractions can seem overwhelming. If you're short on time, or just want to make sure to hit the highlights, these are the top must-see sights in St. Petersburg.

    The Hermitage Museum

    The Hermitage Museum is one of the most important sights to see for any visitor to St. Petersburg. There you can see lots of different paintings of old masters inside the Hermitage. Prepare to come face-to-face with classic Western artists.

    The Russian Museum

    The Russian Museum holds one of the largest collections of Russian art in the world. View Russian art creations through the ages, from Byzantine (拜占庭)-style icons to the Socialist Realism of Stalin's times.

    Kizhi Island

    Kizhi Island is an open-air museum of wooden buildings from the Karelia Region of Russia. These impressive structures are made without any nails (钉子) — the wood fits together with joints and grooves (沟槽).

    Peterhof

    Peterhof is as beautiful as it is fun. You'll be charged for admission (门票), but go to Peterhof when the fountains (喷泉) are working — during the day in the summer. They are shut off in winter as well as in the evenings.

    The Church of Our Savior on Spilled Blood

    Love it or hate it, the Church of Our Savior on Spilled Blood is an attractive must-see sight. The beautiful look may make your eyes brighten, and the paintings inside the church will make you say “Wow!”

    The Bronze Horseman Statue

    The Bronze Horseman is a part of Russian Culture and a symbol of St. Petersburg. Made famous by Alexander Pushkin (普希金), this statue of Peter the Great sitting on his horse can truly show Peter the Great's influence on the Russian idea of greatness.

    The booking notes of the play “The Age of Innocence”:

    Price:$10

    BOOKING

    There are four easy ways to book seats for performance:

--in person

    The Box Office is open from Monday to Saturday, 10 a.m.—8 p.m.

--by telephone

    Ring 01324976 to reserve your tickets or to pay by credit card(Visa, MasterCard and Amex accepted)

--by post

    Simply complete the booking form and return it to Global Theatre Box Office.

--on line

    Complete the on-line booking form at www.Satan-fiedtheatre.com

    DISCOUNTS:

    Saver: $ 2 off any seat booked any time in advance for performances from Monday to Thursday. Savers are available for children up to 16 years old, over 60s and full-time students.

    Supersaver: half-price seats are available for people with disabilities and one companion. It is advisable to book in advance. There is a maximum of eight wheelchair spaces available and one wheelchair space will be held until an hour before the show.

    Standby: best available seats are on sale for $ 6 from one hour before the performance for people eligible (suitable) for Saver and Supersaver discounts and thirty minutes before for all other customers.

Group Bookings: there is a ten percent discount for parties of twelve or more.

    School: school parties of ten or more can book $6 standby tickets in advance and will get every tenth ticket free.

    Please note: we are unable to exchange tickets or refund money unless a performance is canceled due to unforeseen circumstances.

    Thirteen vehicles lined up last March to race across the Mojave Desert, seeking a million in prize money. To win, they had to finish the 142-mile race in less than 10 hours. Teams and watchers knew there might be no winner at all, because these vehicles were missing a key part－drivers.

    DARPA, the Defense Advanced Research Projects Agency, organized the race as part of a push to develop robotic vehicles for future battlefields. But the Grand Challenge, as it was called, just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance. One had its brake lock up in the starting area. Another began by throwing itself onto a wall. Another got tied up by bushes near the road after 1.9 miles.

    One turned upside down. One took off in entirely the wrong direction and had to be disabled by remote control. One went a little more than a mile and rushed into a fence; another managed to go for six miles but stuck on a rock. The "winner," if there was any, reached 7.8 miles before it ran into a long, narrow hole, and the front wheels caught on fire.

    "You get a lot of respect for natural abilities of the living things," says Reinhold Behringer, who helped design two of the car-size vehicles for a company called Sci-Autonics. "Even ants (蚂蚁) can do all these tasks effortlessly. It's very hard for us to put these abilities into our machines."

    The robotic vehicles, though with necessary modern equipment such as advanced computers and GPS guidance, had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes immediately. Sure, that very young child, who has just only learned to walk, may not think to wipe apple juice off her face, but she already knows that when there's a cookie in the kitchen she has to climb up the table, and that when she gets to the cookie it will taste good. She is more advanced, even months old, than any machine humans have designed.

She is widely seen as proof that good looks can last forever. However, at over 500 years of age, time is catching up with the Mona____Lisa. 

The health of the famous picture, painted by Leonardo da Vinci in 1505, is getting worse year by year, according to the Louvre Museum where it is housed. 

"The thin, wooden panel(嵌板) on which the Mona Lisa is painted in oil has changed shape since experts checked it two years ago," the museum said. Visitors have noticed the changes but repairing the world's most famous painting is not easy. Experts are not sure about the materials the Italian artist used and their current chemical state.

 Nearly 6 million people go to see the Mona Lisa every year, and many are attracted by the mystery of her smile. "It is very interesting that when you're not looking at her, she seems to be smiling, and then you look at her and she stops," said Professor Margaret Livingstone of Harvard University. "It's because direct vision is excellent at picking up details, but less suitable to look at shadows. Da Vinci painted the smile in shadows."

 However, the actual history of the Mona Lisa is just as mysterious as the smile. Da Vinci himself loved it so much that he always carried it with him, until it was eventually sold to France's King Francis Ⅰ in 1519.

 In 1911, the painting was stolen from the Louvre by a former employee, who took it out of the museum and hid it in his coat. He said he planned to return it to Italy. The painting was sent back to France two years later.

 During World War Ⅱ, the French hid the painting in small towns to keep it out of the hands of German forces.

 Like many old ladies, the Mona Lisa has some interesting stories to tell.