A strong memory depends on the health and vitality （活力） of your brain. They say that you can't teach an old dog new tricks, but when it comes to the brain, scientists have discovered that this old saying simply isn't true. {#blank#}1{#/blank#}

      Give your brain a workout. Memory, like muscular strength, requires you to “use it or lose it”. The more you work out your brain, the better you'll be able to process and remember information.{#blank#}2{#/blank#}

        Don't skip the physical exercise. While mental exercise is important forbrain health, that doesn't mean you never need to break a sweat. Physical exercise helps your brainstay sharp. It increases oxygen to your brain and reduces the risk for disorders that lead to memory loss.

        Get enough sleep. There is a big difference between the amount of sleep you can get by on and the amount you need to function at your best.{#blank#}3{#/blank#}Keep stress in check. Stress is one of the brain's worst enemies. Over time, stress destroys braincells. Studies have also linked stress to memory loss.

        Have a laugh.{#blank#}4{#/blank#} That holds true for the brain and the memory, as well as the body. Unlike emotional responses, which are limited to specificareas of the brain, laughter engages multiple regions across the whole brain.

{#blank#}5{#/blank#}Just as the body needs fuel, so does the brain. You probably already know that a diet based on fruits, vegetables, whole grains, “healthy”fats and lean protein will provide lots of health benefits, but such a diet can also improve memory. For brain health, though, it's not just what you eat—it's also what you don't eat.

A. Eat a brain-boosting diet.

B. Play games with memory.

C. Laughter is the best medicine.

D. But oversleeping is not good for yourbrain.

E. Even skipping a few hours makes adifference!

F. You have to shake things up from timeto time!

G. The human brain has an astonishingability to adapt and change.

     Some people make you feel comfortable when they are around. You spend an hour with them and feel as if you have known them half your life. {#blank#}1{#/blank#} .

    Here are several skills that good talkers have. If you follow the skills, they'll help you put people at their ease, and make friends with them quickly.

    First of all, good talkers ask questions. {#blank#}2{#/blank#} . One well-known businesswoman says, “At business lunches, I always ask people what they did that morning. It's a common question，but it will get things going.” From there you can move on to other matters—sometimes to really personal questions. {#blank#}3{#/blank#} . Second, once good talkers have asked questions, they listen to the answers .This point seems clear, but it isn't. Your questions should have a point and help to tell what sort of person you are talking to. And to find out, you really have to listen carefully and attentively.

    {#blank#}4{#/blank#} . If someone sticks to one topic, you can take it as a fact that he's really interested in it. Real listening also means not just listening to words, but to tones of voice. If the voice sounds dull, then, it's time for you to change the subject.

    Finally, good talkers know well how to deal with the occasion of parting. If you're saying goodbye, you may give him a firm handshake and say, “I've really enjoyed meeting you.” {#blank#}5{#/blank#} . Let people know what you feel, and they may walk away feeling as if they've known you half their life.

A. Real listening at least means some things.

B. You can become a popular person.

C. Almost anyone, no matter how shy he is, will answer a question.

D. And how he answers will let you know how far you can go.

E. If you want to see that person again, don't keep it a secret.

F. It's polite to listen to others with a smile.

G. These people have something in common.

    Ever since I was a kid I had a 6 second rule.That means that if I had something I needed to do but didn't want to, I'd count till 6 and do it anyway.My personal rule was to just never ever break that rule,that at 6,I HAD to get it going.Most of the time I'd use it to get out of bed or get out of the bath.Sometimes I'd also use it to restrict my time playing "ok in 6 seconds I'll stop playing with my dolls."

    As I grew older,I'd use it as a motivation to get it going with my homework,get off messenger,etc.It really worked well,the same rule applied;whatever happens,don't cheat the "rule of 6." Most of the time,I wouldn't even have to count till 6 because I knew it would just mean I have to do it,so I'd just do it anyway.As an adult,I've pretty much conditioned myself to do things by the rule of 6.I've pretty much mastered most usual things in my life but the rule of 6 never fails me when I start something new.Exercising,running,getting cooking,starting reading,it just works for me.

    At the time,when I was 6,6 was my favorite number.So just go ahead and pick a number from 1-10 (although Id suggest 3-10) and try it.The important thing is not just to let yourself down.Like any other trick,it only works if you allow it to.

    As most people know, in the last few years, sandstorms have swept across many cities and areas of North China, polluting the air and disturbing daily lives of human beings. People look dirty and suffer many kinds of illnesses, such as breath difficulty. The sandstorm is such a serious problem that it has not only weakened the industrial and agricultural development of our country but also caused a lot of trouble to the living conditions of the Chinese people.

    Therefore, effective measures should be taken as soon as possible to stop its happening. So how should we deal with the frightening sandstorms?

    Some experts offer practical advice as follows: For one thing, more money ought to be put into tree planting and forest protection in order to keep more water on the Earth. For another, government of all countries should make laws on environment protection. For example, banning the use of throw-away chopsticks and punishing illegal tree cutting. Scientists should also study and find ways to lower the grade of its destruction and to improve the environment. As for some schools, education about sandstorms should be spread properly and timely to make more and more people attach great importance to this problem.

    How people look forward to sunny days with soft wind touching their faces now and forever! The golden days can come back so long as we try our best to protect the natural environment from today on. And the fact is that what I expect is not just a dream. There are some sweet fruits from the early efforts.

    An autonomous vehicle designed for making local commerce deliveries was uncovered by Nuro. The vehicle is about the height of an SW but far narrower than a typical car. The electric car features four outside compartments（暗格）—two on each side -to hold separate deliveries. Each compartment can be tailored to a specific use, such as cooking a pizza or refrigerating a package.

    “We can use self-driving technology to deliver anything, anytime, anywhere for basically all local goods and services,” Nuro co-founder Dave Ferguson said. “Consumers used to be okay with two-week paid shipping. It became two-week free delivery, followed by one week, two days, and the same day. Now same-day delivery isn't fast enough for some customers.”

    Nuro isn't alone in building robots for local commerce deliveries. Earlier this month, Toyota, a Japanese car company, uncovered a concept vehicle that could be used for package delivery. A handful of startups—including Starship Technologies, Marble and Dispatch—are testing small robots for deliveries on sidewalks.

    Nuro's vehicle will likely face legal hurdles. Fully autonomous vehicles without a test diver aren't legal in California today, and many companies have shifted testing o states where regulators are more welcoming of autonomous vehicles, such as Arizona.

    Nuro expects to face fewer challenges because it doesn't carry passengers. Nuro's narrow size may also be helpful when navigating streets and avoiding pedestrians. The vehicle isn't equipped with any special features to communicate with pedestrians or other road users. Some companies have tested and patented solutions such as digital screens that signal the car's next move. Ferguson said his team conducted studies and found that such techniques could confuse people. Nuro believes it's better to make sure the car performs predictably, so that human drivers know what to expect from it.

    “We feel by creating this new technology that's going to enable this last mile delivery, we're going to be creating new markets and doing things that previously weren't possible,” Ferguson said. “This is not swapping out jobs with robots. It's creating new markets. There will definitely be new employment opportunities.”