The average computer user has between 5 and 15 username/password combinations to log in different kinds of accounts. Some demand you use a specific number of symbols and digits, while others require you to change your password every 60 days. The feeling of confusion resulting from memorizing these login information has grown so common that it actually has a name: password fatigue(疲劳).

    Having to remember so many different passwords is annoying, but it can also be dangerous. Because it is virtually impossible to remember a unique password for each of these accounts, many people leave handwritten lists of usernames and passwords on or next to their computers.

    {#blank#}1{#/blank#} While these practices make it easier to remember login information, they also make it easier for thieves to hack into accounts.

    Single Sign-On (SSO) confirmation and password management software can help solve this problem. With SSO, users only need to remember one password to log in to the main system.

    {#blank#}2{#/blank#} SSO software is typically used by large companies, schools, or libraries.

    {#blank#}3{#/blank#} If a user loses or forgets the password required to log in to SSO software, the user will then lose access to all of the applications linked to the SSO account. Users who rely on password management software face the same problems.

    Although most websites or network systems allow users to recover or change lost passwords by providing email addresses or answering a prompt（提示）, this process can waste time and cause further frustration. What is more, recovering a forgotten password is only a temporary solution.

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    Some computer scientists have suggested computers rely on biometrics(生物测定学). {#blank#}5{#/blank#} The use of biometrics raises questions concerning privacy and can also be expensive to practice.

    Software engineers and computer security experts are still searching for the cure to password fatigue. Until they find the perfect solution, however, everyone will simply have to rely on the password system currently in place.

    Feet help us walk, run, dance, and jump. The words feet and foot are also used in everyday speech.

    To be under someone's feet means to be troublesome. In other words, you are standing too close to someone and are getting in their way. Some adults criticize (批评) children for being under foot.

    Speaking of children, if someone says their home will soon have the pitter-patter of tiny feet, it means the family is expecting a baby!

    Now, people who are active do not let grass grow under their feet. They are never in one place for very long. People who can think and take action at the same time are said to be able to think on their feet.

    Some people appear to have it all. They have money, a good education, good looks, a great family and a large circle of friends. You could say they have the world at their feet. This means whatever they want seems to be there for them.

    People who have both feet firmly on the ground are realistic and practical. They are not dreamy. You might say such a person is well grounded. If you are a bad dancer, you might be described as having two left feet. To dance well, it is better to have a right foot and a left foot.

    Sam loves skiing. He thinks that it would be fun to own a ski resort (滑雪场) high in the mountains. But he knows nothing about running a business. So, he decides to get his feet wet. In other words, he wants to get used to a new situation.

    He joins an organization for resort owners and attends their meetings. He travels to ski areas all over the United States. This helps Sam get his foot in the door. Having a foot in the door is a starting point. This expression comes from people selling things door-to-door. They would block the door with their foot so people couldn't close the door on them.

Habits to Make You a Happy Person

    Habits remain the same even if everything around us is changing fast. {#blank#}1{#/blank#} So they are beneficial to our achievements.

    However, positive habits are hard to develop. People fail and make mistakes when making changes and trying new things. {#blank#}2{#/blank#} That's just life and nothing to feel upset about. What you are supposed to do next is trying again, and develop the positive habits gradually. Here are three little habits that can make a big difference in your life.

    {#blank#}3{#/blank#} How you take care of yourself will make a difference in the quality of your life. The tiny habits of caring for your body and spirit will give you the energy to achieve your goals-plus increase your well-being.

    Don't forget to forgive others. Forgiving takes you one step closer to your happiness. Make a habit of not holding hatred(仇恨). It does nothing but hurts your own happiness and success. {#blank#}4{#/blank#} Instead, you will be more likely to get relief and succeed.

    Encourage yourself to be curious(好奇的). There is no stage in life when we can't be learning something valuable. {#blank#}5{#/blank#}. And as long as you follow your heart and your curiosity, you won't miss out on learning. The habit of being curious means you will always benefit from life.

A. Try to be healthy.

B. Never forget to take notes.

C. Trying things again will bring you happiness.

D. Forgiving yourself doesn't mean you are a loser.

E. As long as you live, there will be something to learn.

F. They will probably not succeed the first time they do it.

G. Good habits can bring us happiness and help us to achieve our goals.

    The Ministry of Construction has released the names of the first group of 20 national parks, including 9 Suzhou classical gardens: Zhuozheng Garden, Liu Garden, Wangshi Garden, Huanxiu Villa, Lion Grove, Yipu Garden, Ou Garden, Tuisi Garden and Canglang Pavilion.

    National parks refer to the famous city parks and gardens. Suzhou classical gardens are parts of China's precious cultural heritage (遗产) (all the 9 gardens are on the list of World Cultural Heritage) as well as a necessary part of the life of Suzhou citizens, not to mention they are also world-famous tourism resorts (胜地). In fact, their unique historical and cultural background serves to contribute to their ranking among national parks.

    The earliest classical gardens in Suzhou can date back to the Song Dynasty. However, the gardens impress their visitors not only with their age-old history but also with their delicate scenes, particularly Canglang Pavilion, Zhuozheng Garden, Lion Grove and Liu Garden, the most famous four that represent different styles of dynasties of Song, Yuan, Ming and Qing.

    In 1978, an imitation（仿造物） of a Suzhou classical garden was set up by Chen Congzhou (the author of the book Suzhou Classical Gardens) in the City Museum of Art in New York, US, which was the first time ever to directly introduce Chinese ancient architecture to Westerners.

    What if we could replace oil with a fuel which produced no pollution and which everybody had equal access to? The good news is that we can, in fact, we are swimming in it -literally.

    Hydrogen is one of the building blocks of the universe. Our own sun is basically, a big，dense cloud of the stuff. And hydrogen can be used to create electricity for power, heat and light.

    The problem is that hydrogen is everywhere and nowhere at the same time. It does not exist as a material on its own, but is always part of something else. So it has to be separated before it can be used.

    Most commercial hydrogen in use now is created from natural gas. As oil will start to run out in around the year 2030. It makes sense to produce as much hydrogen as possi­ble as soon as we can. But natural gas supplies will also begin to run out soon after. Another source is needed.

    Researchers are now using electricity to make water into hydrogen. Companies are working on the problem in their own areas. The first commercial hydrogen "fuel cells" for computers and mobile phones have already come on to the market Auto companies have also invested over US $2 billion in the production of hydrogen fuelled cars.

    The nations of a hydrogen fuelled planet would not fight over energy recourses. There would be a great reduction in pollution, the only by-product of creating hydrogen is pure drinking water something that is very scarce in many parts of the world. But that is not where the good news ends, once the costs of producing hydrogen have been brought down, it will possibly provide power for a third of the Earth's popula­tion that has no electricity.

    And electricity creates wealth. In South Africa over the last decade there has been a large programmer of electrification. Thanks to the programmer, people do not have to spend their days looking firewood to burn for heat and with electric light, they can work long into the night

Some scientists see radical changes in the way the human race co-operates. Hydrogen creates electricity, and is also created by it. With dual use fuel cells, everyone who consumes energy could also produce it. Late at night, a man drives home in London and connects his car into the "worldwide hydrogen web", which it supplies with electricity. A few hours later, a man in Beijing uses that electricity to power the hydrogen cell in his car. Hydrogen could be the first democratic energy source.

    Like all dreams of the future, it seems very far away. But the threat of war and terrorism in the Middle East has made governments and businesses more aware of the need to end oil dependency and spend more time and money on hy­drogen resource. So maybe the threat of war is not a completely bad thing for the future of the human race.

Tricks to become a patient person

Here's a riddle: What do traffic jams, long lines and waiting for a vacation to start all have in common?{#blank#}1{#/blank#}. They're all situations where we could use a little extra patience.

In the digital age, we're used to having what we need immediately and right at our fingertips. However, research suggests that if we practiced patience, we'd be a whole lot better off. Here are several tricks.

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Thankfulness has a lot of benefits. {#blank#}3{#/blank#}. It can also help us practice more patience. "Showing thankfulness can foster self-control," said Ye Li, researcher at the University of California.

Make yourself wait

Instant gratification (满足) may seem like the most "feel-good" option at the time, but psychology research suggests waiting for things actually makes us happier in the long run. And the only way for us to get into the habit of waiting is to practice. Start with small tasks. {#blank#}4{#/blank#} or wait 10 extra minutes before going for that cake. You'll soon find that the more patience you practice, the more you start to apply it to other, more annoying situations.

Accept the uncomfortable

{#blank#}5{#/blank#}. When we experience something outside of our comfort zone, we get impatient about the circumstances. You should learn to say to yourself, "This is merely uncomfortable, not intolerable (无法忍受的)." You'll then gradually become more patient.

A. There is one answer

B. Keep a balanced state of mind

C. Practice showing or expressing gratitude

D. Attach importance to process and method

E. Put off watching your favorite show until the weekend

F So many of us believe being comfortable is the only state we will enjoy

G. Research shows it makes us happier, less stressed and even more optimistic