There are some snack shops inside schools in China. These shops sell snacks1a lot of salt and sugar. Many young students like 2 snacks. Because they think snacks taste good. They often go there3 some after class. But eating 4 snacks is not good for 5 health. 6 the Chinese government( 政 府 ) said there would be 7 snack shops in the schools from April 1st.

There is also a new 8 on students' food safety. The government is asking schools to keep an eye on students' 9. It asks teachers to 10 with students at school together at the lunch time.

    Most cars run on gas. Gas cars work very well. But there is a problem. Cars that run on gas make the air dirty. The dirty air is not good for people, animals or trees. Gas cars make the air dirty for all living things. What can we do? We can drive electric cars!

    Electric cars do not use gas. These cars do not make the air dirty. These cars have batteries that power their motors (马达). The batteries can be charged (充电) many times. They can be used again and again. This makes electric cars great.

    But electric cars have problems too. They are slower than gas cars. They are also very quiet. This means that some people can't hear them when they go by. They may not think a car is coming. So they have to be careful.

    People are finding ways to make electric cars better all the time. Maybe one day all cars will be electric. That would be much better for the world.

    Beauty sleep is a real thing, researches have shown that people who have enough sleep look more attractive (有魅力的) to others.

    A few bad nights are enough to make a person look especially "more ugly", their sleep experiments show.

    The researchers asked 25 university students to join in their sleep experiment. They were asked to get a good night's sleep for two nights.

    A week later, they were asked to sleep for only four hour every night for two nights in a row. The researchers took make—up free (素颜) photos of the volunteers after both the good and the bad sleep.

    Next, they asked 122 strangers to have a look at the photos and judge (评价) them on attractiveness, health, and sleepiness, as well as asking them: "How much would you like to make friends with this person in the picture?"

    The strangers were good at judging whether the person they were looking at was tired, and if he was sleepy, his attractiveness score would be low.

    The strangers also said they wouldn't want to socialize with the tired students. The researchers say this is natural for people. An unhealthy-looking face makes people run away. In other words, people don't want to hang around with people who might be ill.

    Dr Brewer, an expert at the University of Liverpool said: "Judgment of attractiveness is often unconscious (无意识的), but we all do it, and we are able to judge on even something small like whether someone looks tired or unhealthy. This study is a good reminder of how important sleep is to us."

    Many students aren't getting enough sleep at night, which means they end up feeling sleepy during class. {#blank#}1{#/blank#}during the day may be a solution.

    According to Forbes, a mid-afternoon nap can {#blank#}2{#/blank#}, increase your energy and help you study even better. But {#blank#}3{#/blank#}should a nap last? The proper time should be between 10 and 30 minutes, Peter Venn, a sleep expert said.

    Sleeping for {#blank#}4{#/blank#}, such as five minutes or so, is not helpful. That's just not enough time to rest. But if you sleep for too long, you may {#blank#}5{#/blank#}feeling uncomfortable.

Many middle school students don't know how to spend their free time. When they have holidays, they always have nothing to do and feel bored. How can you spend a perfect holiday? Here are some suggestions(建议).

If you like to stay at home, you can do these things. First, you may listen to some light music which helps relax yourself after working for a long time. Second, you can play some indoor(室内的)games such as chess, cards, and able tennis. Third, you can also plant some trees and flowers in your garden to make your home beautiful. Finally, it is also a good way to keep a pet and talk with it. For example, you can chose to keep a dog.

If you don't like to stay at home, you can go for a picnic with your family or friends, take a walk with your parents in a park, or play some sports out of the house. Go out of the house, and you can take some fresh air and keep healthy.

Just have some hobbies(爱好)and you will feel happy during a long holiday.

Do you have trouble trying to create the next big idea?

Sometimes the answer isn't to just force an idea out of your mind.

Instead, you might want to try sitting back, relaxing and letting your mind wander（走神）. Yes, you heard that correctly. If you are in need of a new idea, try daydreaming.

Daydreams allow your mind to run freely and even increase productivity in some cases. Daydreaming develops creativity which is why you have an ah-ha moment and sudden insight（领悟） about a situation. Daydreaming allows you to uncover thoughts and ideas you did not realize you even had and get the thoughts hidden under the surface.

Researchers from the University of California, Santa Barbara, found a connection between daydreaming and creative problem-solving. Their study includes making participants first do an "unusual-use task". They had to try to come up with as many different ways to use an object as they could.

Then, the participants choose to do one of the following four things before doing the "unusual-use task" again; complete a difficult task, complete an easy task, take a 12-minute break, or skip a 12-minute break and move right on to the task exercise again.

Surprisingly, the group that performed best was the one that completed the easy task. Many participants reported that they were daydreaming while performing the easy task. So the researchers believed that this daydreaming might have helped unlock their creativity.

But how could daydreaming help the brain come up with creative ways? The answer is something known as "unconscious thought". Even when you are not actively working to solve a problem, it is still in the back of your mind. Your brain is still thinking about the problem, but in a way that you are unaware of.

When you daydream, your mind is allowed to think in ways it normally would not. Because it is free of control, it can create completely new and out-of-the-box ideas.

Great ideas never come easily, but that does not mean you always have to work hard to get them. Feel free to do what you want and let your mind wander.