If the population of the Earth keeps on increasing at its present rate, there will eventually not be enough resources {#blank#}1{#/blank#} (leave) to support life on the planet. By the middle of the 26^th century, if present trends continue, we {#blank#}2{#/blank#}（use）up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on the earth will make{#blank#}3{#/blank#} necessary for us to look for open space somewhere else. But {#blank#}4{#/blank#} of the other planets in our solar system are capable of supporting life at present. One possible solution {#blank#}5{#/blank#} the problem, {#blank#}6{#/blank#}, has recently been suggested by an American scientist, Professor Carl Sagan. Sagan believes {#blank#}7{#/blank#} before the Earth's resources are {#blank#}8{#/blank#} (complete) exhausted it will be possible to change the atmosphere of Venus and therefore create a new world almost as large as the Earth {#blank#}9{#/blank#}.The difficulty is that Venus is much hotter than the Earth. {#blank#}10{#/blank#}, there is only a tiny amount of water there.

    The Silk Road is in fact a relatively recent term. These ancient roads had no particular name until in the mid-19th century, a European {#blank#}1{#/blank#} (name)the trade and communication network the Silk Road. Since then the term {#blank#}2{#/blank#} (accept)globally.

    In the nineteenth century, a new type of travelers stepped onto the Silk Road, who were eager {#blank#}3{#/blank#} (look)for adventure. Researchers who came from many countries traveled through the Taklamakan Desert, {#blank#}4{#/blank#} is now in Xinjiang, to explore ancient sites along the Silk Road {#blank#}5{#/blank#} (lead) to many discoveries and studies, and most of all, a renewed interest {#blank#}6{#/blank#} the history of these routes.

    Today, many historic {#blank#}7{#/blank#} (build) and monuments still stand, marking the passage of the Silk Road through hotels, ports and cities. What's more, the remarkable network is reflected in {#blank#}8{#/blank#} large number of cultures, languages, customs and religions that have developed for many years along these routes The passage of merchants and travelers of many {#blank#}9{#/blank#} (difference)nationalities resulted not only in commercial exchange, but in a widespread and continual process of cultural interaction. {#blank#}10{#/blank#} (obvious),it has become a driving force in the formation(形式)of diverse societies.

    One Sunday morning in August, I went to a local music festival. I left it early because I had an appointment later that day. My friends walked me to the bus stop and waited with me {#blank#}1{#/blank#} the bus arrived. I got on the bus and found a seat near the back, and then I noticed an old woman with shabby clothes sitting at the front. She was pretending that a tiger toy was real and talking to it. She {#blank#}2{#/blank#} be so lonely.

    Behind her were other people to {#blank#}3{#/blank#} she was trying to talk, but after some minutes they walked away and sat near me, looking annoyed. I didn't want to be laughed at for talking to her but I didn't like leaving her on her own either.

    After a while I rose from my seat and walked to the front of the bus  I sat next to the woman and introduced myself. We had an {#blank#}4{#/blank#} (amaze) conversation. She got off the bus before me and I felt very happy the rest of my way home.

    I'm glad I made the choice. It made {#blank#}5{#/blank#} of us feel good.

    One morning, I was waiting at the bus stop, worried about {#blank#}1{#/blank#}(be) late for school. There were many people waiting at the bus stop, {#blank#}2{#/blank#}some of them looked very anxious and {#blank#}3{#/blank#}(disappoint). When the bus finally came, we all hurried on board. I got a place next {#blank#}4{#/blank#}the window, so I had a good view of the sidewalk. A boy on a bike {#blank#}5{#/blank#}(catch) my attention. He was riding beside the bus and waving his arms. I heard a passenger behind me shouting to the driver, but he refused {#blank#}6{#/blank#}(stop) until we reached the next stop. Still, the boy kept {#blank#}7{#/blank#}(ride). He was carrying something over his shoulder and shouting. Finally, when we came to the next stop, the boy ran up to the door of the bus. I heard an excited conversation. Then the driver stood up and asked," {#blank#}8{#/blank#}anyone lose a suitcase at the last stop?" A woman on the bus shouted, "Oh dear! It's {#blank#}9{#/blank#}(I)." She pushed her way to the driver and took the suitcase thankfully. Everyone on the bus began talking about what the boy had done, and the crowd of strangers {#blank#}10{#/blank#}(sudden) became friendly to one another.

    The 2012 Olympic and Paralympic (残奥会)Games brought the world's attention to sport like never before. It was admirable {#blank#}1{#/blank#}(see) a small nation like the UK organize the Olympic for {#blank#}2{#/blank#} third time in modern history.

    Britain probably {#blank#}3{#/blank#}(invent) quite a few modern sports. One is cricket (板球), {#blank#}4{#/blank#} is now played at international level in a dozen countries. Tennis also first became popular here and Wimbledon is one of the four big tournaments every year. Golf{#blank#}5{#/blank#} (suppose) to be Scottish in origin (起源)from a school of the same name.

    Every town in Britain has football, rugby or cricket club (sometimes all three) and at least one swimming pool. Schools have a gymnasium and playing fields with a running track. As British is an island, there are lots of opportunities for practising water sports {#blank#}6{#/blank#} well.

    "Fair play" in British society is as important as {#blank#}7{#/blank#} (win) or losing. Teamwork is also necessary in many areas of professional life. Even so, individualism (个性)and competitiveness make sporting champions. Steve Redgrave, winner of five gold {#blank#}8{#/blank#}(medal) at five Olympic Games, says: "Being {#blank#}9{#/blank#} (confidence)in yourself is the most important in sporting success. {#blank#}10{#/blank#}(personal), it is the iron in the mind not the supplements (增补物）that wins medals."