Is sleep important to children？A new study says yes.

A new study published this week shows that children who do not get _____ sleep have less control over emotions and are less focused at school.

The National Sleep Foundation _____ 10 to 11 hours of shut-eye per night for children aged between 5 and 12. About 41 million American workers get less than six hours of sleep per night. Now health experts _____ that adults are passing their poor sleeping _____ down to their children.

Reut Gruber is a lead author of the new study. In the study，Gruber and other experts either added or reduced one hour of sleep for _____ children aged 7 to 11. They _____ the children over five nights. The _____ was to see if small changes in the amount of sleep could _____a child's behavior.

“The findings show that for children small changes can make a big _____，and that is why this is meaningful.”

Before the survey began, students were _______to sleep the same amount of hours as they ______ would. Their teachers were asked to ______ the children on thoughtfulness, touchiness and emotional reactions. After five nights of the kids' sleep change, the teachers were asked to take the survey again. ______ their original scores, those who slept one hour less had ______ behavior scores than those who were allowed to sleep an hour more.  Students with less sleep were more annoyed, frustrated and had more problems which need paying ______ to.  The children with more sleep showed ______ in these areas.

“______ less sleep leads to a drop in attention in class, children may ______ on learning and chances to be ______. If they are easily annoyed and frustrated because their bodies and brains are ______, they may not learn as much either,”says Gruber.

   It is a hot summer day， and you feel thirsty. A friend gives you a glass of cold lemonade. How do you feel when you see the glass? Will you describe your feeling as happiness or as pleasure? I believe you will say it is a feeling of pleasure. There is a connection between these two kinds of feelings，and sometimes one causes the other， but they are not the same. Pleasure is more dependent on the five senses while happiness is independent of them.

When you are happy，unpleasant events usually do not disturb you. When you are unhappy，you feel as if everything is against you. You may compensate for it by eating chocolate and sweets because this gives you pleasure，yet you still stay unhappy. A person may smoke cigarettes because it gives him pleasure，yet this does not make him happier，especially if he knows the fact that it is not good for his health.

The physical world is always in a changing state. At each moment a new thing is being created，changed， transformed and then destroyed. This is the normal state of things and no one can change it. If we stay still in a certain state， we are sure to experience unhappiness sooner or later. On the other hand，if we adapt to the environment，nothing can influence our moods. Then outer events have nothing to do with our inner joy of mind.

The room of the mind is filled with worry or fear. If you are free of thinking about them，the room will be empty，and then you will see what is happening and experience it. When your mind stays quiet，you will see that happiness comes from the inside.

   You probably have a first-aid kit at home for your family—but what about your family pets？You need to be ready if your furry friend faces an emergency at home. What's more，as the weather gets warmer，more pet owners take their pets with them when they leave the house—on vacation，to the park，jogging，hiking and even swimming. That can be fun for you and your pet，but there's a chance that your pet will get hurt there，as well. So，it's important to know some of the basics of first aid for your pet if necessary.

If your pet is exposed to long periods of heat and sunlight，she will be easy to get heat exhaustion（衰竭）or heatstroke. Signs of heat exhaustion are breathless，anxiousness，dry gums and red skin most easily seen on the ears.

If either of these occurs，cool the pet right away and，as always，get her to the vet（兽医）.Put the animal in a shaded or air-conditioned area，and wet the body with cool water. Rubbing isopropyl alcohol（异丙醇）on the belly and fanning the area will help drive away the heat. If a pet is suffering from heatstroke，don't try to give her water. Get her to the vet immediately.

If you see an animal that's been hit by a car，or you hit one accidentally，first be cautious of all oncoming traffic before trying to reach the animal. Approach carefully. Even a severely injured animal can bite you.

As someone helps with directing traffic, cover the animal with a blanket or towel. If the animal cannot stand on her own, there's a good chance that there are neck, back or head injuries, so try to gently transfer the animal to a flat surface. Then transport that flat surface to the nearest vet. Picking up or hand-carrying the animal may worsen the injuries.