The Beijing International Horticultural Exhibition（世界园艺博览会）,which is running from

    April 29 to Oct 7, will be attended by 110 countries and international organizations. It has 41 outdoor exhibition centers that will host about 2,500 activities. It is expected to draw around 16 million visitors from home and abroad.

    The theme of the expo is "Live Green, Live Better", aiming to introduce the world to a green, innovative（创新的）and harmonious（和谐的）China. Flowers and herbs from all over the world will be displayed at the expo.

    In addition, wildflowers will also be a highlight at the expo.

    ⑴We are living in a world full of competition. Parents compete with others in their offices, our brothers and sisters compete with others in their colleges, and we compete with our classmates in schools. Most of us give up facing competition and will never be successful. Why can't we do better than others? One important reason is that we have no self﹣confidence.

    ⑵事实上，人人生而平等。You can do what others do. Your classmates may be better than you in some ways, but you may be better than them in other subjects. So everyone has his or her advantages.

    ⑶Don't look at things from a single point of view. Try to discover your own advantages, and believe that you can do better than others in those ways.

    Competition is not so terrible. ⑷不要害怕那些比你更优秀的同学。

    ⑸Remember that self﹣confidence is the first step to success. Believe in yourselves, and you will be successful in any competition.

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    Do you have a tail? Of course not, we know. But tails are like opinions, actually, everyone has them: fishes, birds, most reptiles, and even some of our closest relatives

    Since tails first evolved(进化) at least 500 million years ago. Geckos (壁虎)use them to store fat. birds use them to steer through the air, But for most mammals (哺乳动物).{#blank#}1{#/blank#}Yet, as you get closer to humans on the evolutionary tree, tails disappear, Gorillas(大猩猩)don' t have them, and neither do chimps(黑猩猩) or any other apes (类人猿) including us, of course, To understand why, take a look at how we walk.

    {#blank#}2{#/blank#}walking like this gives us a huge advantage because unlike four﹣legged animals. which have to pour energy into every step they take, two legs take advantage of gravity(重力),which does some of the work for us. You see, each time we take a step, gravity pulls us forward. The end result is that when we walk, we use around 25% less energy than walking on all fours, and this way of getting around also totally eliminate (淘汰) the need for a tail.

    It's said that you can still see a reminder of a time when our ancient ancestors had one. Just look at a human spine(脊椎).{#blank#}3{#/blank#}That's your tailbone. It's all that's the rest of our tail.

    Now, babies are born with what looks like a tail, but that's not what's really going on. Most often, these tails are actually a parasitic twin(寄生虫). These types of tails usually form as a birth defect(瑕疵).{#blank#}4{#/blank#}

    So the tail of humans has gone, it's the result of evolution millions of years Will humans be much taller, stronger or smarter in the future?

    One would think that campers would know not to break the branches off trees for firewood, drive fast around the campground, litter, or leave a fire not looked after, but I've seen people do all of these things. No matter where you put up your tent, here are five things not to do at a campground.

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    What's it like to be near someone who decides to arrive late at night? Last summer, on a rainy night at a state park in Vermont, we heard noises from excited kids and barking dogs very close to our tent after midnight. There is no beautiful way to set up camp in the middle of the night, so please, just don't do it.

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    No one thinks that his dog is annoying, but we all know that some pets are better off left home. The only thing worse than a camper who stands by lazily as his dog barks at passers-by for no reason at all, is that he leaves his dog at his campsite while he goes off for the night.

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    This is the most important and often unnoticed camping manner in the book. Nearly every campground has rules that do not allow noise late at night and early in the morning, but most places also don't have the staff to carry them out.

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    You might accept leaving your bar of soap thinking that someone might have forgotten to bring theirs, but I can assure you that non one wants to use your leftover soap especially if it's hairy, so please take it with you.

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    No matter how good your taste in music is, I'd say most people prefer quiet hours with the nature. The truth is that no one want to hear your music except for yourself. Headphones are a great invention, but since too many campers fail to pack them, don't forget your earlugs.

    When we want to buy a house, we all want to have nice neighbours to live near us, because most of us think that it is helpful to live with some good neighbours. But what kind of neighbour is good? The answers are different from people to people. Here are my answers.

    First, it is very important for our neighbours to respect our life. If we have a neighbour and he or she tries to know more about our life, how will we feel? He or she may also talk with others about our life. Do you want to live with him or her any more? The answer is "No". We will feel very sad to have this kind of neighbour and we may want to move away as quickly as we can.

    Next, a good neighbour is always ready to give us a hand when we need him or her. For example, if we are not at home and someone tries to open our door, our neighbour sees it, and calls 110. It will help us a lot.

    Finally, a good neighbour should love the environment(环境). He or she never puts rubbish here and there. And he or she should throw all the rubbish into the bin and keep the place clean. A good environment can make people who live in it comfortable and feel happy all the time.

    I think we all should learn to be good neighbours, and I also hope everyone will have good neighbours and live a happy life.