Shenzhen is a city in South China．It is not very big, but it has attracted people of the whole country and the whole world as well．

　　Just about twenty years ago, it was only a small fishing village．There were not many people there．Most of them lived on fishing．Things have greatly changed since the 1980’s．It became the first special economic zone(经济特区)in China．

　　Because of the opening policy(政策)，economic changes between China and the outside world have increased greatly．People can come and go easily between Shenzhen and Hong Kong．Both foreigners and Chinese have built a lot of factories, companies and tourists’ attractions there．People all over the country have come to find jobs．Many of them have settled down in this new booming(兴起的)city．

　　Shenzhen is developing so fast that it has become a well－known metropolis(大都市)in China．

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阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳答案。

　　Tibet is one of the most popular places for Chinese tourists．The number of travelers to Tibet has grown by 10％ every year over the last few years．Since July 1, 2006, when the first train ran the 1, 956 kilometers from Xining to Lhasa, more and more people have been going to Tibet．

　　The train stops at several famous places along the way, such as Qinghai Lake, Kunlun Mountain, and the Potala Palace(布达拉宫)．Passengers can also enjoy many activities during the journey, like Tibetan dancing and Karaoke．

　　On the train, passengers in the seats can have tea, eggs and noodles for breakfast, and fried chicken and green vegetables for lunch and dinner．Unlike most Chinese trains which have open-hole toilets(厕所), this one has special toilets which can collect the waste．There is also a special rubbish system in the train that keeps the environment clean．All the windows on the train protect people from the bright sunlight．TVs and electrical sockets(插座)for computers and mobile phones can be found on the train．

　　Because there isn't much oxygen(氧气)high in the Tibetant Plateau(高原), trains will have oxygen masks(氧气罩)for those who need them．They are there to ensure that passengers feel comfortable when they have enough oxygen on the famous “roof of the world”．There are also doctors on the train to make sure that all of the travelers are safe．

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　　Once a young man was traveling by train．It was a long and boring journey．

　　As the train was moving 　　1　　 a wilderness(荒野)，the passengers looked out of the windows 　　2　　．When the train reached a bend(转弯处)，it 　　3　　 and then a simple house 　　4　　．It was so easy to notice 　　5　　 everybody on the train turned to “enjoy” with eyes wide open．Some passengers even began a 　　6　　 about it．The young man was also 　　7　　 by the scenery．

　　On his return he 　　8　　 the train at the nearest station and found his 　　9　　 to the house．Its owner said that he was troubled by the 　　10　　 of the train．He wanted to 　　11　　 the house, but nobody would buy it．

　　　　12　　 the young man spent 30, 000 dollars on the 　　13　　．He thought it was a good place for 　　14　　 because it was facing the railway bend．When the train moved slowly past, the 　　15　　 passengers would be very interested in the house．

　　He 　　16　　 to connect with some big companies and told them that could be used for advertisement．　　17　　 the Coca-Cola Company took it to put up their 　　18　　．To everyone’s surprise, the young man was 　　19　　 180, 000 dollars for a three-year rent(租金)．This is a true story．It tells us that discovery is very important to 　　20　　．Monday people have got new ideas from it．

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