The young dolphin swam in the waters off Brisbane, Australia, and found his seafood dinner. Suddenly he realized that he was not the only hungry predator(捕食者)in the area. A ten-foot tiger shark aimed at the same fish. The dolphin refused to give up the meal and dashed to the shark. The shark attacked him, biting down hard into his back. {#blank#}1{#/blank#}

    Later, on the sandy beach nearby, staff at the Tangalooma Resort were shocked to see the severely wounded male. He was a regular visitor, a playful 12-year-old dolphin called Nari. “We've known him all his life, since he was a baby,” says resort director Trevor Hassard. {#blank#}2{#/blank#}The wound measure about a foot long and more than an inch deep. He took photos of Nari and sent them to vets at Sea World, a local marine mammal park. They agreed that Nari needed emergency care.

    The next day, Sea World staff traveled to the beach to catch Nari.{#blank#}3{#/blank#}Nor did he appear the next evening. Everyone was depressed and worried about him.

    {#blank#}4{#/blank#}“I had started thinking the worst,” Hassard says. “Words can't describe how excited we were.” Six rescuers surrounded Nari and carried him to Sea World. The vets performed an operation to remove the dead flesh from around the bite. Nari was then moved to a special pool where his wound was cleaned and treated regularly.

    {#blank#}5{#/blank#}Sea World decided to tansort Nair back to his home beach. Hassard had worried that the other dolphins might reject Nari after such a long absence. That concern disappeared when Nari's friend Echo instantly recognized him and moved close to his side.

A. But Nari didn't show up

B. Three days later, Nari finally turned up.

C. He felt quite worried when he took a close look at Nari's injury

D. After seven weeks, Nari was fully recovered but growing restless.

E. Shark researchers are trying to warn people to escape without being eaten

F. The five-meter-long dolphin simply swam away, disappearing into the water below.

G. Luckily, the wounded dolphin managed to escape from the shark's biting with violent struggle.

    Moving into a new home in a new neighborhood is an exciting experience. Of course, you want to make sure that you become an accepted and valuable part of your new neighborhood. The easiest way to accomplish this is to make sure you conduct yourself as a good neighbor should.{#blank#}1{#/blank#}

    Perhaps one of the most important things you can do as a good neighbor is to keep your property(房产) neat, clean, and in good repair. {#blank#}2{#/blank#}By choosing to keep the outside of the home in great shape, you will help to improve the look and feel of the area.

    Second, take the overall appearance of the neighborhood seriously. When going for a walk. Take along a small garbage bag. {#blank#}3{#/blank#}This small act will let your neighbors know that you care about the area.

    {#blank#}4{#/blank#} If a neighbor is going to be out of town, offer to collect mail and newspapers. If a neighbor suffers an illness, offer to do the grocery shopping. Let them know you are there to help in any way this acceptable, while still respecting the privacy of your neighbor.

    {#blank#}5{#/blank#}By following the basic rules of respecting others, taking care of what belongs to you, and taking pride in the appearance of the neighborhood in general, you will quickly become a good neighbor that everyone appreciates.

    As we all know, friendship is important in our daily life. A friend can give us help and share our difficulties and happiness. But how to make friends is still difficult to some of us. {#blank#}1{#/blank#}

Be friendly to others. {#blank#}2{#/blank#} You should try to make a stranger feel at home wherever he happens to be. Think more of others than of yourself and never judge a person by his look and clothes.

    Be reliable. If you and your friend agree to meet somewhere, don't be late. If you're not going to make it on time or make it at all, call them as soon as you realize it. {#blank#}3{#/blank#} Be someone that people know they can depend on.

    {#blank#}4{#/blank#} Listen carefully to what people say, remember important details about them （their names, their likes and dislikes）, ask questions about their interests, and just take the time to learn more about them.

    Encourage your friends. {#blank#}5{#/blank#} A friend to all is a friend to none. Never make fun of or laugh at your friends in front of others. You should come to support them.

A.  Be a good listener.

B.  When you say you'll do something, do it.

C.  A true friend always gives courage to his friends.

D.  Never leave your friend when he is in trouble.

E.  The following information can give you some tips.

F.  Smile at others and you are sure to get a smile in return.

G.  He will remain with them in both good as well as bad times.

    We all know it is not always so easy to be happy. We also know how stressed you are, with homework, exams, sports meets and extra outdoor activities, let alone trying to have a life outside school. {#blank#}1{#/blank#}

    Exercise

    Physical activity produces all sorts of things which help us to relax and feel good. Exercise can also make us feel more confident, which certainly makes us happier. You don't have to be a future Olympian. {#blank#}2{#/blank#}If you hate P. E. , find something less competitive: go for a walk, dance around your room or hit a park.

    Thankfulness

    It is easy to take the good thing in life without thinking about them or showing you're thankful.{#blank#}3{#/blank#} An easy way to do this is to make a list before bed of five things you're thankful for. They can be big things, like your family and friends, or little things, like a good hair day.

    Laugh

    {#blank#}4{#/blank#} But research has shown that a good laugh reduces stress and, even if you start by forcing yourself to laugh, improves how you feel.

    Sleep

    Get enough sleep.{#blank#}5{#/blank#} Not getting enough sleep makes you angry and sad, so leave your phone outside your room, turn off the lights and let yourself have a good sleep. Sweet dreams!

A. Teens especially need at least eight hours.

B. If you're feeling blue, know that you're not alone.

C. You can increase happiness if you exercise with a friend.

D. So here are our top tips on being happy and staying happy.

E. Everyone can get something good from moving a little bit.

F. But studies have shown that giving thanks can make you happier.

G. Some days, laughing is just about the last thing you feel like doing.

    Every animal sleeps, but the reason for this has remained foggy. When lab rats are not allowed to sleep, they die within a month. {#blank#}1{#/blank#}

    One idea is that sleep helps us strengthen new memories. {#blank#}2{#/blank#}We know that, while awake, fresh memories are recorded by reinforcing (加强) connections between brain cells, but the memory processes that take place while we sleep have been unclear.

    Support is growing for a theory that sleep evolved（进化） so that connections between neurons (神经元) in the brain can be weakened overnight, making room for fresh memories to form the next day. {#blank#}3{#/blank#}

Now we have the most direct evidence yet that he is right. {#blank#}4{#/blank#}The synapses （神经突触）in the mice taken at the end of a period of sleep were 18 percent smaller than those taken before sleep, showing that the connections between neurons weaken while sleeping .

If Tononi's theory is right, it would explain why, when we miss a night's sleep, we find it harder the next day to concentrate and learn new information--our brains may have smaller room for new experiences.

    Their research also suggests how we may build lasting memories over time even though the synapses become thinner. The team discovered that some synapses seem to be protected and stayed the same size. {#blank#}5{#/blank#} “You keep what matters,”Tononi says.

A. We should also try to sleep well the night before.

B. It's as if the brain is preserving(保存) its most important memories.

C. Similarly, when people go for a few days without sleeping, they get sick.

D. The processes take place to stop our brains becoming loaded(装载) with memories.

E. That's why students do better in tests if they get a chance to sleep after learning.

F. “Sleep is the price we pay for learning,” says Giulio Tononi, who developed the idea.

G. Tononi's team measured the size of these connections, or synapses, in the brains of 12 mice.

Some Texting Rules You Should Be Following by Now

    Don't text and drive {#blank#}1{#/blank#}. Don't do it. Personal safety always comes first and staying off your hand-held while driving is extremely important. If you can't resist, then keep your phone where you can't reach it while you're driving.

    {#blank#}2{#/blank#}

    If you're texting someone who says "driving", stop texting. Period. {#blank#}3{#/blank#}. Just stop texting. You can consider calling the person, but please bear in mind that some states have laws in place restricting talking on the phone while driving. But if you don't get a response…

    "Don't keep texting until they respond," an article in LifeHack suggests." {#blank#}4{#/blank#}. And if they're not, maybe they just don't feel like texting." While not getting a response likely makes you feel anxious, and while many consider it rude, it's also rude to continue bombarding someone with messages when that person is not replying to you.

    Avoid group texts "Most would say group texts are the worst," notes an article in Mashable." They take up more time than you ever expected. Reading through all of your messages is boring. {#blank#}5{#/blank#}.

A. It's that simple

B. Don't even say "OK"

C. They're probably busy

D. They seem to never end

E. Stop driving immediately

F. Just think of any other means of communication

G. Don't put others in the situation of texting and driving