阅读下面的文言文，完成下列各题。

    禹之决江水也，民聚瓦砾。事已成，功已立，为万世利。禹之所见者远也，而民莫之知。故民不可与虑化举始，而可以乐成功。

    子产始治郑，使田有封洫，都鄙有服。民相与诵曰：“我有田畴，而子产赋之。我有衣冠，而子产贮之。孰杀子产，吾其与之。”后三年，民又诵之曰：“我有田畴，而子产殖之。我有子弟，而子产诲之。子产若死，其使谁嗣之？”使郑简当民之诽訾也，而因弗遂用，则国必无功矣，子产必无能矣。舟车之始见也，三世然后安之。 夫开善岂易哉！

    子产开始治理郑国时，让田地有沟渠疆界，让城邑、鄙野有规定的服色。人民一起怨恨地唱道；“我们有田亩，子产征军赋。我们有衣冠，子产收赋税。谁要杀子产，我们去帮助。”三年之后，人民又歌颂他说：“我们有田亩，子产让它增五谷。我们有子弟，子产对他们施教育。子产如果死了，还有谁能继承他？”假使郑简公面对人民的诽谤非议，就不再任用子产，孔子了，那么国家一定无所成就，子产一定无法施展才能了。舟、车开始出现的时候，人们都不习惯，过了三代人们才感到习惯。开始做好事难道容易吗？

    魏攻中山，乐羊将。已得中山，还反报文侯，有贵功之色。文侯知之，命主书曰：“群臣宾客所献书者，操以进之。”主书举两箧以进。令将军视之，书尽难攻中山之事也。将军还走，北面再拜曰：“中山之举，非臣之力，君之功也。”当此时也，论士殆之日几矣，中山之不取也，奚宜二箧哉？一寸而亡矣。文侯，贤主也，而犹若此，又况於中主邪？

    魏襄王与群臣饮，酒酣，王为群臣祝，令群臣皆得志。史起兴而对曰：“群臣或贤或不肖，贤者得志则可，不肖者得志则不可。”王曰：“皆如西门豹之为人臣也。”史起对曰：“魏氏之行田也以百亩，邺独二百亩，是田恶也。漳水在其旁，而西门豹勿知用，是其愚也。知而弗言，是不忠也。愚与不忠，不可效也。”魏王无以应之。明日，召史起而问焉，曰：“漳水犹可以灌邺田乎？”史起对曰：“可。”王曰：“子何不为寡人为之？”史起曰：“臣恐王之不能为也。”王曰：“子诚能为寡人为之，寡人尽听子矣。”史起敬诺，言之於王曰：“臣为之，民必大怨臣，大者死，其次乃藉臣。臣虽死、藉，愿王之使他人遂之也。王曰：“诺。”使之为邺令。史起因往为之。邺民大怨，欲藉史起。史起不敢出而避之。王乃使他人遂为之。水已行，民大得其利，相与歌之曰：“邺有圣令，时为史公。决漳水，灌邺旁。终古斥卤，生之稻粱。”魏襄王可谓能决善矣。 诚能决善，众虽喧哗，而弗为变。

（节选自《吕氏春秋•乐成》）

    “I like photography because it captures amazing things that you might not see again,” Timmy Walsh says. He takes pictures of flowers, sunsets and road signs. But those photos don't usually end up in a scrapbook(剪贴簿) or on his bedroom walls.

    When Timmy was five, he found out that his aunt Bev had lung cancer. He wanted to do something to help her. His first idea was to sell his photos from a lemonade--type stand in front of his house in Pennsylvania. “My mom said it wouldn't work because we were not on a busy street,” Timmy explains.

    His next idea was to have an art show. Timmy decorated his home with candles, flowers, and white lights. Then he arranged his photos. Timmy's mom, Sheila, remembers: “Our dining-room table was filled, the living room—everything was filled with photos.” Friends, family, and Timmy's teachers came to the show. He raised more than $300 for cancer research that night. Aunt Bev was “very happy and excited,” he says.

    After a local newspaper wrote a story about Timmy's photos, a volunteer offered to help him set up a website. As people learned about his cause, called Camera for a Cure, Timmy began receiving invitations to sell his pictures at art galleries and fund-raisers. Since then, his work has appeared in more than 20 shows.

    When Timmy is at a show, he greets each customer and talks about what he was thinking when he took his photos. And he always shares facts about lung cancer. Sometimes donations and sales are slow, but that doesn't bother him. “It doesn't matter how much money we made because we just raised awareness,” he says. Timmy knows that finding a cure for lung cancer will take time and effort. So Timmy will keep doing his part by shooting and selling photos of the things he sees.