Tom was one of the brightest boys in the year,with supportive parents.But when he was 15 he suddenly stopped trying.He left school at 16 with only two scores for secondary school subjects.One of the reasons that made it cool for him not to care was the power of his peer（同龄人）group.

    The lack of right male role models in many of their lives—at home and particularly in the school environment—means that their peers are the only people they have to judge themselves against.

    They don't see men succeeding in society so it doesn't occur to them that they could make something of themselves.Without male teachers as a role model,the effect of peer actions and street culture is all-powerful.Boys want to be part of a club.However,schools can provide the environment for change,and provide the right role models for them.Teachers need to be trained to stop that but not in front of a child's peers.You have to do it one to one, because that is when you see the real child.

    It's pointless sending a child home if he or she has done wrong.They see it as a welcome day off to watch television or play computer games.Instead,schools should have a special unit where a child who has done wrong goes for the day and gets advice about his problems—somewhere he can work away from his peers and go home after the other children.

    People who like travelling have their reasons. They believe that travelling can help them expand their field of view, especially in the geographical and historical sense. They also think that touring will give them more chances to enjoy different kinds of food and experience new things that would never be brought by other activities. But those who dislike travelling also have some reasons.

    Travelling, in my opinion, does more good than harm. Most importantly, it broadens our mind. We can get in touch with other civilizations (文明), cultures, customs and ideas.

    Through history, most people travelled because of necessity (必要性)-not for pleasure. People travelled just in order to remain alive. They searched for food to eat or places to live in. They sometimes ran away from enemies. This is not to say that no one ever travelled just for the fun of it. In ancient times, for example, rich Romans travelled all the way to Greece to take part in the Olympic Games, and festivals. Of course, some people decided to travel just out of curiosity. They wanted to find out what it looked like beyond the horizon (地平线). Also business travel has been going on for centuries. Traders could not only make money but also learn to speak several languages and be introduced to different cultures.

    So, travelling does enrich our mind and draw new ideas to us. There is no doubt that we can get much from it.

    My name is Kobus Vermeulen. On February 16, 2015, I was one of five South Africans among the 100 people selected by Mars One to begin training to live on the Red Planet. The Dutch not-for-profit's aim is simple: build a human colony (殖民地) on Mars. Since I have begun this journey, the one question that people ask me most is why I want to leave a good planet for wasteland. Here is why.

    I have been interested in Mars since I was a child, and I always thought that if I had the opportunity to leave the planet, I would take it. So the why begins with a child's dream.

    However, as I grew, so did the why. In my eyes, since the 1970s the public has stopped trying to learn more about space. We've put our dream aside. We're satisfied with getting our dose (一份) of the future from sci-fi movies and comic books. And so the first part of my motivation (动机) is to get people thinking about space travel and the colonization (殖民化) of other planets in real terms again instead of just as sci-fi visions of the future.

    If we want that future, the truth is that we have to build it, and anything worth doing comes with risks. Somebody has to take the risks, and I, along with thousands of other people, am willing to take them.

    But it goes deeper than that. If the task of Mars One is even partially (部分地) successful, it will encourage a new generation of scientists and engineers that will build us an even better future.

    Without a dream, there is no reason to build those things. The public that does not try to understand science and technology does not choose good leaders. Leaders who don't care for science and technology do not make budgets (预算) for it. Besides, without the money, the dream dies. Projects like Mars One are like a focusing lens (聚焦透镜) for dreams. It is an opportunity to change hearts and minds at the grassroots level.

    Twenty years ago, most experts believed that differences in how boys and girls behaved were mainly due to differences in how they were treated by their parents, teachers, and friends. It's hard to cling to that belief today. Recent research has shown that there are biological differences between boys and girls. Understanding these differences is important in raising and educating children.

    For example, girls are born with more sensitive hearing than boys, and the difference increases as kids grow up. So when a grown man speaks to a girl in what he thinks is a normal voice, she may hear it as yelling. Conversely (反过来), boys who appear to be inattentive in class may just be sitting too far away too hear the teacher.

    Likewise, girls are better in their expression of feelings. Studies reveal that negative emotions are seated in an area of the brain called the amygdala. Girls develop all early connection between this area and the cerebral cortex (大脑皮层), enabling them to talk about their feelings. In boys these links develop later. So if you ask a troubled adolescent boy to tell you what his feelings are, he often cannot say much.

    Dr. Sax, an advocate of single-sex education, points out that keeping boys and girls separate in the classroom has yielded striking educational, social, and interpersonal benefits. Therefore, parents and teachers should try to recognize, understand, and make use of the biological differences that make a girl a girl, and a boy a boy.

China is known as the Kingdom of Bamboo. More than 400 species of bamboo, one third of all known species in the world, grow in China. China {#blank#}1{#/blank#}(lead) the world in the amount of area planted with bamboo, the number of bamboo trees and the amount of bamboo wood 

{#blank#}2{#/blank#}(produce) every year. 

The oldest bamboo {#blank#}3{#/blank#}(article) in China were unearthed from the remains of a primitive society that existed some 7,000 years ago in {#blank#}4{#/blank#}is now Hemudu,Yuyao County, Zhejiang Province. As early as the Shang Dynasty, Chinese people used the bamboo for making weapons, such as bows and arrows. Before paper {#blank#}5{#/blank#}(invent), strips of bamboo were the most important writing medium, more widely used than silk, {#blank#}6{#/blank#}they were cheaper, resistant to corrosion(腐蚀) and more abundant. Bamboo has thus played an important part in the spread and development of traditional Chinese culture. 

Bamboo was {#blank#}7{#/blank#}(close) connected with the daily life of people in ancient China. Su Dongpo, a literary giant of the Song Dynasty, said that people could not live {#blank#}8{#/blank#}bamboo, and people of the time used bamboo {#blank#}9{#/blank#}(make) paper, hats, shoes and so on. At that time, as today, bamboo shoots were eaten as a popular dish because of {#blank#}10{#/blank#}(they) crispness and fresh, sweet taste. Bamboo shoots also contain vitamins, sugar, fat, and protein.