Dreams can be familiar and strange, fantastical or boring, but some dreams might be connected to the mental processes that help us learn. In a recent study, scientists found a connection between nap time dreams and better memory in people who were learning a new skill.

    In the study, 99 college students between the ages of 18 and 30 each spent an hour on a computer, trying to get through a virtual maze (逃宫). The maze was difficult, and the study participants had to start in a different place each time they tried, making it even more difficult. They were also told to find a particular picture of a tree and remember where it was.

    For the first 90 minutes of a five - hour break, half of the participants stayed awake and half were told to take a short nap. Participants who stayed awake were asked to describe their thoughts. Participants who took a nap were asked about their dreams after sleep and they were awakened within a minute of sleep to describe their dreams.

    Stickgold, a neuroscientist, wanted to know what people were dreaming about when their eyes weren't moving during sleep.Four of the 50 people who slept said their dreams were connected to the maze. Some dreamed about the music that had been playing when they were working; others said they dreamed about seeing people in the maze. When these four people tried the computer maze again, they were able to find the tree faster than before their naps.

    Stickgold suggests the dream itself doesn't' help a person learn, it's the other way around. He suspects that the dream was caused by the brain processes associated with learning.

    All four of the people who dreamed about the task had done poorly the first time,which makes Stickgold wonder if the dreams show up when a person finds a new task particularly difficult. People who had other dreams, or people who didn't' take a nap, didn't show the same improvement.

    The United States is full of cars. There are still many families without cars, but some families have two or more. However, cars are used for more than pleasure. They are a necessary part of life.

    Cars are used for business. They are driven to offices and factories by workers who have no other way to get to their jobs. When salesmen are sent to different parts of the city, they have to drive in order to carry their products. Farmers have to drive into the city in order to get supplies.

    Sometimes small children must be driven to school. In some cities school buses are used only when children live more than a mile away from the school. When the children are too young to walk too far, their mothers take turns driving them to school. One mother drives on Mondays taking her own children and the neighbors' as well. Another mother drives on Tuesdays, another on Wednesday, and so on. This is called forming a car pool. Men also form car pools, with three or four men taking turns driving to the place where they all work.

    More car pools should be formed in order to put fewer cars on the road and use less gas. Too many cars are being driven. Something will have to be done about the use of cars.

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Nobody likes an old idiot(傻子).Developing a sense of humor is part of becoming a mature,emotionally healthy individual.Laughter is good for the soul,which builds friendships and relieves stress.It serves as the glue for social situations and as an ice-breaker for sadness and boredom.If you've ever been told to "lighten up" or "chill out",you should save the blue attitude for serious situations and develop your sense of humor.

Forgive the accident.A sudden fall is humorous not because we like to see people fall,but because it surprises us.From a spilled water glass in a meeting to Aunt Rae's teeth coming off in the Thanksgiving Day,the embarrassment of accidents can be relieved by humor and a helping hand.After making sure that nobody is hurt,forgive accidents with a chuckle(咯咯地笑) rather than a scolding.

Look for the unexpected.The kid who used to look at you with his eyes closed during a test had the idea.Parents who serve green eggs and ham to their children on graduation day get the idea.Unexpected action lightens the atmosphere and relaxes people.

Learn to laugh with your kids.Most of what children say and do is funny.Help them learn that accidents are sometimes funny and sometimes occasions for joining in and helping another human being.By sharing laughs and attempting to explain humor,you develop your sense of humor,as well as help kids develop their own sense of humor.

As a child I once read a story of two men who walked 2,650 miles from Mexico to Canada with huge packs,  {#blank#}1{#/blank#}caught my eye, as L, too, dreamed of adventures in the wilderness. I've always remembered that story,{#blank#}2{#/blank#}never believed I would actually make it. It was too far out of my comfort zone.

But then, at the age of 42, I{#blank#}3{#/blank#}(hike) the 88 Temples Trail through Japan There, I experienced how attractive it could be to hike alone.{#blank#}4{#/blank#}impressed me most were the fantastic mountains, grand temples and generous local people.

When I shared my plan {#blank#}5{#/blank#}friends and colleagues, the news was welcomed with mixed{#blank#}6{#/blank#}(react). From some I got enthusiastic approval. But from others there were frowns and question marks. Half a year away from my family was{#blank#}7{#/blank#}challenge for me. Yet it wouldn't defeat me. After all, six months is{#blank#}8{#/blank#}(simple) a short period in a lifetime.{#blank#}9{#/blank#}(work) hard for 20 years in shiny office buildings, I felt the need for more adventure in my life. I hoped to slow down and look within, as well as explore the unfamiliar things. I understood that I needed them both.{#blank#}10{#/blank#}John Muir once said, "Keep close to nature… and climb a mountain or spend a week in the woods. Wash your spirit clean."

Restless in their seat, glancing around and never looking you in the eye. We think we know when someone is lying, but do we really?

A study showed that people's ability to tell if someone is lying is little better than 50%. Interestingly, another research suggests that we are actually quite good at unconsciously (无意识地) spotting liars, but our conscious thoughts overrule this. Scientist R. Edward points out that training in recognising liars doesn't always help, saying "quick, inadequate training sessions lead people to over-analyse and to do worse than if they go with their gut reactions (本能)". 

One reason for this may be "truth bias". Experts have suggested that we are usually biased to believe that people are telling us the truth. Another reason that might make us bad at identifying liars is that there are many myths around body language and lying. Many of us believe that liars are unlikely to look us in the eye or will be uneasy in their seat. However, this isn't necessarily the case. It may be that not looking away, or sitting more still than usual, are actually the giveaways that someone is lying. 

To see how someone's behaviour really changes as they lie, many experts recommend observing people talking about things known to be true. This allows us to establish a baseline of their normal behaviours while speaking. Any differences to this baseline behaviour could show that someone is lying. This is why it's much harder to lie to people who know us well.

As liars may be working hard to conceal their behaviours, some psychologists have suggested increasing the effort needed for this by asking them to tell their story again backwards. When facing this increased cognitive (认知的) load, any behavioural tell-tale signs are magnified (放大).

It can be hard to spot liars. We are likely to trust people, and behaviours can be hidden, but if we know someone well, and if someone is working too hard to stick to their story, it's possible to see through people who are not telling the truth.