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    Sleep, as we know, is important to us because it helps restore tired organs and tissues in our body. But how much sleep do we actually need?

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    For most of us, eight hours seems to be about the right amount. Yet we know that there are a great many people who get along perfectly with less sleep and some who may even need more. A great deal depends on the way we live. But a good general rule to follow is to sleep as long as we have to in order to feel happy and be able to work at our best when we are awake.

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    There are actually different levels of sleep. There is a deep sleep and a shallow sleep. In a shallow sleep our body does not get the same kind of rest as it gets in a deep sleep, so that after eight hours of a shallow sleep we may still feel tired. But a short deep sleep can be very restful.

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    Alexander the Great was able to get a deep sleep whenever he needed it. Once, during the night before an important battle, he remained awake longer than anyone else. Then he wrapped himself in a cloak and lay down on the earth. He slept so deeply that his generals had to wake him three times to give command to attack!

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    Normally when we go to sleep, our “ sleep center” blocks off nerves so that both our brain and our body go to sleep. One prevents us form wanting to do anything and the other makes our internal organs and limbs go to sleep. But someone will fall asleep (brain sleep) and keep on marching, because his body is not asleep!

Building Trust in a Relationship Again

    Trust is a learned behavior that we gain from past experiences. {#blank#}1{#/blank#} Trust is a risk. But you can't be successful when there's a lack of trust in a relationship that results from an action where the wrongdoer takes no responsibility to fix the mistake.

    Unfortunately，we've all been victims of betrayal. Whether we've been stolen from，lied to，misled，or cheated on，there are different levels of losing trust. Sometimes people simply can't trust anymore. {#blank#}2{#/blank#} It's understandable，but if you're willing to build trust in a relationship again，we have some steps you can take to get you there.

    {#blank#}3{#/blank#} Having confidence in yourself will help you make better choices because you can see what the best outcomewould be for your well-being.

    {#blank#}4{#/blank#} If you've been betrayed，you are the victim of your circumstance. But there's a difference between being a victim and living with a “victim mentality”. At some point in all of our lives，we'll have our trust tested or violated.

    You didn't lose “everything”. Once trust is lost，what is left? Instead of looking at the situation from this hopeless angle，look at everything you still have and be thankful for all of the good in your life. {#blank#}5{#/blank#} Instead，it's a healthy way to work through the experience to allow room余地 for positive growth and forgiveness.

A. Learn to really trust yourself.

B. It is putting confidence in someone .

C. Stop regarding yourself as the victim.

D. Remember that you can expect the best in return.

E. They've been too badly hurt and they can't bear to let it happen again. .

F. This knowledge carries over in their attitude toward their future relationships.

G. Seeing the positive side of things doesn't mean you're ignoring what happened.

    Like it or not, there will be difficult times in our lives. You might lose your job, fail in your exams or have an illness.{#blank#}1{#/blank#}Here are some ways not to lose hope during difficult times.

    ⒈Have faith.

    {#blank#}2{#/blank#}No matter how bad the situation is, things will turn out to be good in the end. Several years ago I failed to get my master's degree. It was a really bad experience.{#blank#}3{#/blank#}It was of much better quality than my previous university. Experiences like this strengthen my belief that having faith is important during difficult times.

    ⒉Be around supportive people.

    Going through difficult times is hard, and going through them alone is even harder. You need a group of positive people who can support you.{#blank#}4{#/blank#}If you don't, my suggestion is to start looking for one. Don't wait until you need it, because it will be too late by then. You need the community before difficult times come.

    ⒊Help others.

    An additional benefit of being in a good community is that it encourages you to think about other people. It pushes you to help others and, therefore, think about other people {#blank#}5{#/blank#}As a result, your situation won't look as bad as it would be otherwise. Often the situation looks worse than it really is because we give too much attention. Shifting (移开) some of your attention away will put the situation in a better view.

A. Your community helps a lot.

B. Whatever it is, it's important not to lose hope.

C. I changed my attitude towards failure.

D. In this way you take your focus away from yourself.

E. But I got a scholarship at an overseas university later.

F. You must believe that things will work out well eventually.

G. You should become part of a community that cares for one another.

Is it necessary to learn when we are 50s, 60s or even 70s? Most people consider when they get retired, they are supposed to be completely laidback, do something fun, or hang around. {#blank#}1{#/blank#}It's particularly important to the elderly.

    Through learning, we know how to think, how to memorize, how to ask questions and even how to interact with others. According to a study, while we are learning, the brain creates neural(神经) pathways that make us smarter.{#blank#}2{#/blank#}The more we learn, the more new neural pathways develop in our brains.

When it comes to learning, it doesn't mean we must load ourselves with lots of knowledge. What we need to do is just learn something we like day in and day out.{#blank#}3{#/blank#}Everyone learns from bottom to up. If we have an interest to learn, that desire will naturally push us to move forward.

As we feel worn out from learning, don't be discouraged.{#blank#}4{#/blank#}An old saying goes, “Birds of a feather fly together.” As long as we have partners to learn all together, our learning excitement will come alive again. On the contrary, if we don't learn, and choose to distance ourselves from others, we might be getting dumb, and slow; eventually, we lose energy, and life passion. Instead of being bored, dumb, why don't we keep learning?

    {#blank#}5{#/blank#} More importantly, learning explores our life horizon, helps us build up our confidence; gradually, it leads us to a way of finding a sense of value and achievement in the process of learning journey.

A. It's never too old to learn.

B. Don't worry if we cannot learn well.

C. You should set a high learning target.

D. Learning makes us understand how potential we are.

E. In other words, our brains are active as we learn something new.

F. Look for a partner who has the same common interest as you do.

G. However, the truth is that learning makes us energetic, and self-fulfilled.

    You'd think the human race would have understood sleeping very well by now, but many of us are still sleeping poorly. Part of the problem is that we have wrong information and beliefs about this important health need. Let's set the facts straight. {#blank#}1{#/blank#}

    ⒈More sleep is better for you.

    There could be such a thing as too much sleep. The amount of sleep we need varies by person and also changes as we age. Harvard researchers found that a lot of sleep (9 hours or more) is linked with poor sleep quality. {#blank#}2{#/blank#} Aim for better sleep.

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    Alcohol can help most people fall asleep. However, it also can cause you to wake up more during the night, decreasing your sleep quality. Consider drinking non-alcoholic drink before bed instead.

    ⒊If you wake up in the middle of the night, lie in bed until you eventually fall back asleep.

    {#blank#}4{#/blank#}We all hope to quickly fall back asleep. So we tend to stay in bed hoping it'll happen at any minute now. If that doesn't happen, though, within 15 minutes, most experts recommend getting out of bed to do something that occupies our bodies and brains without overstimulating us. Try not to check the clock either.

    ⒋You can catch up on sleep on weekends.

    When we lose sleep during the week, we accumulate a kind of sleep ＂debt＂. {#blank#}5{#/blank#}Not so fast. This might actually make you sleepier the next week. Instead of waking up later on the weekends, you'd better go to sleep earlier or perhaps take a nap in the afternoon.

A. Alcohol helps you sleep.

B. Here are some things you might have been told about sleeping but aren't completely true.

C. Everyone should get 7—8 hours of sleep per night.

D. So don't aim for more sleep — even on the weekends.

E. Waking up in the middle of the night is the pits (烦心事), but it happens to all of us.

F. You'll have a better day and perhaps sleep better at night.

G. Can you pay that debt back by sleeping on Saturday or Sunday?

    In an online class, developing healthy patterns of communication with professors is very important. {#blank#}1{#/blank#} While I have only listed two of each, there are obviously many other situations that can arise. Students should be able to extend the logic（逻辑）of each to their particular circumstance.

    Do's

    {#blank#}2{#/blank#} Questions about subject content are generally welcomed. Before asking questions about the course design, read the syllabus（教学大纲）and learning management system information to be sure the answer isn't hiding in plain sight.

    Participate in discussion forums（论坛）, blogs and other open-ended forums for dialogue. {#blank#}3{#/blank#} Be sure to stay on topic and not offer irrelevant information. Make a point, and make it safe for others to do the same.

    Don'ts

    Don't share personal information or stories. Professors are not trained nurses, financial aid experts or your best friends. If you are in need of a deadline extension, simply explain the situation to the professor. {#blank#}4{#/blank#}

    Don't openly express annoyance at a professor or class. {#blank#}5{#/blank#} When a student attacks a professor on the social media, the language used actually says more about the student. If there is truly a concern about a professor's professionalism or ability, be sure to use online course evaluations to calmly offer your comments.

A. That's what they are for.

B. Turn to an online instructor for help.

C. If more information is needed, they will ask.

D. Remember that online professors get a lot of emails.

E. Below are some common do's and don't for online learners.

F. Everyone has taken a not-so-great class at one time or another.

G. Ask questions, but make sure they are good, thoughtful questions.