With the summer holiday just around the corner, it seems like everybody is busy planning their vacations. Here are some tips that can helpyou enjoy your holiday without emptying your pocket:

Travel off-season

Go to your desired destination while the demand is low and takeadvantage of huge discounts. During the peak season, the hotel and flightprices increase quickly, and you'll likely spend more of your vacation timestanding in line due to the rush of tourists.{#blank#}1{#/blank#}

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      Websites can help you find discount hotel rooms. Look for placesthat do not charge extra for children if they use the existing bedding. Staywith the locals. If you and your family are going to stay for a longer period,renting a small apartment is a good choice.

Eat like a local

      Why eat at big chain restaurants when you can experiencesomething new?{#blank#}3{#/blank#}

During your family trip, try new food where the locals eat. Thiswill not just save money, but also provide you with a new and differentexperience. For smaller meals and snacks, avoid restaurants and try street foodor other takeout.

Don't hesitate to bargain

      Tourist- heavy places are known for overcharging for just abouteverything. Clothes, travel goodies, souvenirs, etc. are very expensive atthese places. {#blank#}4{#/blank#} Bargain hard to get the best price.

Choose local transportation

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      Instead, take buses, railways or subways, which are alwayscheaper. If you are planning to stay for a while, you can consider renting acar. Hiring a car is much easier than carrying your bags everywhere if you aremoving around a lot.

A. Save on hotels.

B. Surf the Internet while traveling.

C. Therefore, avoid buying anything there.

D. So it's best to find out when the off-season starts.

E. Planning your meals is another way to reduce your travelcosts.

F. For this reason, you shouldn't feel ashamed to ask forbargains.

G .As a tourist, avoid taking taxis whenever possible, sincethey are expensive.

    Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing or whistle(吹口哨) when you are happy.

    Some scientists believe that birds do sing some of time just because they are happy. However, they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.

    Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims as its own. Only he and his family are welcome there. No other families of the same species(物种) are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout. Probably this would be enough to frighten him away.

    If so, you have actually frightened the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting(筑巢) season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird's song, and it is usually enough to keep an outsider away.

    Birds sing loudest in the spring when they are trying to attract a mate（配偶）and warn others not to enter the territory of theirs.

    You can see that birds have a language all their own. Most of it has something to do with attracting mates and setting up territories.

    The number of giraffes is becoming smaller across Africa, according to the Giraffe Conservation Foundation. The total population has dropped by 40 percent in the last 15 years. Surprisingly, even scientists haven't given much attention to giraffes. We are learning more about their ecology, but what we know is still way behind what we know about other species. "It's a silent extinction," said Dr. Julian Hennessy, a wildlife scientist.

    "The main reason for the smaller number of giraffes is their loss of living places," said Hennessy, "as an increasing part of land is used for farming. But hunting also has a big influence." You might wonder why hunters would focus on giraffes. First of all, once a giraffe is brought down, there is lots of meat with a small amount of effort. Besides, there is another thing encouraging the hunting. In Tanzania, Hennessy says, the latest word on the street is that eating giraffe meat could cure AIDS. Fresh giraffe heads and bones can be sold at prices of up to $140 per piece.

    Another widespread misconception about giraffes is that they are everywhere. Look at kids' books which are full of giraffes. They are always in zoo collections. They can be seen easily, so you don't think we have to worry about them. But the truth is that they are in danger of extinction. There is a lack of right and true data.

    Hennessy and other researchers are now pulling together the data needed to improve the situation of the entire giraffe species and all nine subspecies (亚种). The information will be used to change the giraffe's listing on the International Union for Conservation of Nature Red List, which now lists the species as of "least concern" but two subspecies as "endangered". "It's a lot of work to gather the necessary information," Hennessy says. "And several other giraffe subspecies will be recommended for endangered listings next year or the year after." He hopes that the world will finally start to take notice of how endangered these beloved animals have become.

    Despite what so many people would love to believe, NASA hasn't discovered any evidence of past or present intelligent life on Mars. So, when the Curiosity rover (好奇号探测器）found something suspicious on the Red Planet's surface, they were not only surprised but also a little bit worried.

    The thin fragment (碎片）was suspicious enough to guarantee its own name, with NASA's Curiosity rover team calling it the “Pettegrove Point Foreign Object Debris,” named for the location where it was discovered. With no idea what it was or where it came from, the rover s handlers began to worry that it might actually be a piece of the rover itself, suggesting some unseen damage or other issue with the robot. Thankfully, those concerns seem to have been unfounded.

    In a new update from NASA the object has now been identified as a natural piece of rock rather than a piece of any man-made craft or vehicle. The team analyzed the bizarre object with a tool called the ChemCam RMI. The instrument uses a laser (激光器）t0 sniff out the makeup of anything it's pointed at, and the results for this particular piece of debris revealed that it's actually just a very thin piece of rock.

    NASA describes the inspection： The planning day began with an interesting result from the previous plan's ChemCam RMI analysis of a target that was referred to as “Pette Point Foreign Object Debris” （PPFOD),and speculated to be a piece of spacecraft debris fact was found to be a very thin flake of rock, so we can all rest easy tonight-Curi0sity n0t begun to shed its skin!

    How this particularly thin sliver of rock got to where it is—and why it seems to be a different colour than the surrounding sand and debris-remains unexplained, but at least the rover falling apart.

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 we all know, friendship is of great importance 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#}

1. 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 appearance and clothes.

2. 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.

3.{#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.

4. Encourage your friends: A true friend always gives courage to his friends.{#blank#}5{#/blank#}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 friend to all is a friend to none.

D. The following information can give you some tips:

E. And never leave your friend when he is in trouble.

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.