— Excuse me. Can you tell me where the nearest bank is?

— ________ Oh, yes! It's past the post office, next to a big market.

    It is now believed that the game of snooker(斯诺克) was invented by Sir Neville Francis Fitzgerald Chamberlain in 1875 in Jubbulpore, India.
The rules of world snooker have been improved to a fine degree. There are six pockets in the table. Two in each corner of one end, known as the top pockets, and two in each corner of the other end, known as the bottom pockets, and the final two in the middle of the longer sides, known as the center pockets. Different “spots”(地点) are signed on the table for the different colored balls. The values(分值) of the balls are red-1, yellow-2, green-3, brown-4, blue-5, pink-6, and black-7. The cue(球杆) must be no less than 914mm long. Snooker may be played by two or more players, either independently or as sides.
    Snooker is a big sport in China. There are 300 million snooker players there, which is more than the rest of the world put together. So it's no surprise that some of the world's best players come from China. They have been showing off their talent at the World Snooker Championship, which takes place every year in the UK at the Crucible Theatre in the northern English city of Sheffield. And it is the most important event in professional snooker. This year four of the contenders(冠军争夺者) for World Snooker Champion were Chinese – Marco Fu, Liu Chuang, Ding Junhui and Liang Wenbo. Liu Chuang and Liang Wenbo were making their debut(首次亮相) in Sheffield this year, in fact. And they did quite well in the game.

小明把碳素墨水滴了少许到草履虫培养液中，几分钟后制成临时的装片，在显微镜下观察，发现有些草履虫的某结构被染成了黑色，这种结构是（　　）

阅读下列文段，回答文后的问题。
        只要信客一回村，他家里总是人头济济。多数都不是来收发信、物的，只是来看个热闹，看看各家的出门人出息如何，带来了什么稀罕物品。农民的眼光里，有羡慕，有嫉妒；比较得多了，也有轻蔑，有嘲笑。这些眼神，是中国农村对自己的冒险家们的打分。这些眼神，是千年故土对城市的探询。
        终于有妇女来给信客说悄悄话：“关照他，往后带东西几次并一次，不要鸡零狗碎的。”“你给他说说，那些货色不能在上海存存？我一个女人家，来强盗来贼怎么办……”信客沉稳地点点头，他看得太多，对这一切全能理解。都市里的升沉荣辱，震颤着长期迟钝的农村神经系统，他是最敏感的神经末梢。
       闯荡都市的某个谋生者突然得了一场急病死了，这样的事在那样的年月经常发生。信客在都市同乡那里听到这个消息，就会匆匆赶去，代表家属乡亲料理后事、收拾遗物。回到乡间，他就夹上一把黑伞，伞柄朝前，朝死者家里走去。乡间报死讯的人都以倒夹黑伞为标记，乡人一看就知道，又有一个人客死他乡。来到死者家里，信客满脸戚容，用一路上想了很久的委婉语气把噩耗通报。可怜的家属会号啕大哭，会猝然昏厥，他都不能离开，帮着安慰张罗。更会有一些农妇听了死讯一时性起，咬牙切齿地憎恨城市，憎恨外出，连带也憎恨信客，把他当做了死神冤鬼，大声呵斥，他也只能低眉顺眼、连声诺诺。
       下午，他又要把死者遗物送去，这件事情更有危难。农村妇女会把这堆简陋的遗物当做丈夫生命的代价，几乎没有一个相信只有这一点点。红红的眼圈里射出疑惑的利剑，信客浑身不自在，真像做错了什么事一般。他只好柔声地汇报在上海处置后事的情况，农村妇女完全不知道上海社会，提出的诘问每每使他无从回答。
        直到他流了几身汗，赔了许多罪，才满脸晦气地走出死者的家。他能不干这档子事吗？不能。说什么我也是同乡，能不尽一点乡情乡谊？老信客说过，这乡间不能没有信客。做信客的，就得挑着一副生死祸福的重担，来回奔忙。四乡的外出谋生者，都把自己的血汗和眼泪，堆在他的肩上。