小明买彩票从来未中奖，那么他下次买彩票中一等奖从可能性来讲是____

阅读下面的文言文，完成下列小题。

    刘子玄，名知己，以玄宗讳嫌，故以字行。年十二，其父为授《古文尚书》，业不进，父怒，楚督之。及闻为诸兄讲《春秋左氏》，冒往听，退辄辨析所疑， 叹曰：“书如是，儿何怠！”父奇其意，许授《左氏》。逾年，遂通览群史。与兄知柔俱以善文词知名。擢进士第，调获嘉主簿。

    武后证圣初，诏九品以上陈得失。子玄上书，讥“每岁一赦，或一岁再赦，小人之幸，君子之不幸”。又言：“君不虚授，臣不虚受。妄受不为忠，妄施不为惠。今群臣无功，遭遇辄迁，至都下有‘车载斗量，杷椎碗脱’之谚。”又谓：“刺史非三载以上不可徙，宜课功殿，明赏罚。”后嘉其直，不能用也。时吏横酷淫及善人公卿被诛死者踵相及子玄悼士无良而甘于祸作《思慎赋》以刺时。苏味道、李峤见而叹曰：“陆机《豪士》所不及也。”

    累迁凤阁舍人，兼修国史。中宗时，擢太子率更令。介直自守，累岁不迁。会天子西还，子玄自乞留东都。三年，或言子玄身史臣而私著述，驿召至京，领史事。迁秘书少监。时宰相韦巨源、纪处讷、杨再思、宗楚客、萧至忠皆领监修，子玄病长官多，意尚不一，又仕偃蹇，乃奏记求罢去。

    始，子玄修《武后实录》，有所改正，而武三思等不听。自以为见用于时而志不遂，乃著《史通》内外四十九篇，讥评今古。徐坚读之，叹曰：“为史氏者宜置此坐右也。”子玄内负有所未尽，乃委国史于吴兢，别撰《刘氏家史》及《谱考》。上推汉为陆终苗裔，非尧后；彭城丛亭里诸刘，出楚孝王嚣曾孙居巢侯般，不承元王。按据明审，议者高其博。

    开元初，迁左散骑常侍。尝议《孝经》郑氏学非康成注，举十二条左证其谬，当以古文为正；《易》无子夏传，《老子》书无河上公注，请存王弼学。宰相宋璟等不然其论，奏与诸儒质辩。博士司马贞等阿意，共黜其言。诏可。

    会子贶为太乐令，抵罪，子玄请于执政，玄宗怒，贬安州别驾。卒，年六十一。子玄领国史且三十年，官虽徙，职常如旧。礼部尚书郑惟忠尝问：“自古文士多，史才少，何耶？”对曰：“史有三长：才、学、识。世罕兼之，故史者少。夫 有学无才，犹愚贾操金，不能殖货；有才无学，犹巧匠无楩楠斧斤，弗能成室。善恶必书，使骄君贼臣知惧，此为无可加者。”时以为笃论。子玄善持论，辩据明 锐，视诸儒皆出其下，朝有论著辄豫。殁后，帝诏河南（府）就家写《史通》，读之称善。追赠工部尚书，谥曰文。（节选自《新唐书•刘知几传》）

阅读下面三部分内容，从各小题所给的四个选项中选出能回答问题所提问题或完成所给句子的最佳答案。

    I used to live in a small town with trees all around. It is about thirty years since I left my hometown. But I still remember what it was exactly like. And I often “see” it in many of my dreams. My hometown is a beautiful place. It stands beside a wide river and is rich in fish and rice.

    But in the old days it was a poor and backward little town. Many people had no work. They lived a hard life. There was no tall building and the only street was narrow. But trees and flowers made the town beautiful. Just outside the town, there was a river. You could see different kinds of fish swimming in the clear water. People here lived a simple life.

Since a new policy(政策) was taken by the government, great changes have taken place there. The streets have been widened. Factories, schools, hospitals, cinemas and theatres have been built one after another. People's life is greatly improved. You can see tall buildings, big department stores and factories everywhere. Different kinds of cars and buses are running in the wide streets.

    But with the development of the industry(工业), we have fewer trees. Air and water pollution is becoming more and more serious. And there are also other problems. We should try our best to make it richer. At the same time, we must do something to stop pollution and make our town even more beautiful.