阅读下面的文言文语段，完成小题。
                                                                                                                                            【甲】
         元丰六年十月十二日夜，解衣欲睡，月色入户，欣然起行。念无与为乐者，遂至承天寺寻张怀民。怀民亦未寝，相与步于中庭。庭下如积水空明，水中藻荇交横，盖竹柏影也。何夜无月？何处无竹柏？但少闲人如吾两人者耳。
                                                                                                                                            【乙】
         熙宁十年秋，彭城大水，云龙山人张君之草堂，水及其半扉。明年春，水落，迁于故居之东，东山之麓。升高而望，得异境焉，作亭于其上。彭城之山，冈岭四合，隐然如大环，独缺其西一面，而山人之亭，适当其缺。春夏之交，草木际天；秋冬雪月，千里一色；风雨晦明之间，俯仰百变。 　　
山人有二鹤，甚驯而善飞，旦则望西山之缺而放焉。纵其所如，或立于陂田，或翔于云表；暮则傃东山而归，故名之曰“放鹤亭”。
         郡守苏轼，时从宾客僚吏往见山人，饮酒于斯亭而乐之。挹山人而告之曰：“子知隐居之乐乎？虽南面之君可与易也。……南面之君，虽清远闲放如鹤者，犹不得好，好之则亡其国；而山林遁世之士，虽荒惑败乱如酒者，犹不能为害，而况于鹤乎？由此观之，其为乐未可以同日而语也。”山人欣然而笑曰：“有是哉！”

                                                                                                                                                                               （苏轼《放鹤亭记》有删节）
          【注释】①放鹤亭：位于今江苏徐州市云龙山上。②陂（bēi）：水田。③傃（sù）：向，向着，沿着④挹（yì）：通“揖”，作揖。

某种衬衫的进价为400元，出售时标价为550元，由于换季，商店准备打折销售，但要保持利润不低于10%，那么至多打（   ）

2013年暑假里,明明和爸爸妈妈一块外出旅游,每次无论坐车还是进旅游景点都是明明去买票、问路,看到孩子一趟一趟地跑,妈妈心疼了,可是爸爸却坚持让明明完成。你认为爸爸这样做的理由是　(　　)

①自立就要克服依赖性

②提高自立能力最基本的就是要积极实践和锻炼

③自立就应该什么也不听父母的

④只要反复锻炼,不断实践,就能提高自立能力​

                                                               Saying no starts small
    'All right then-just one more piece…' Words every girl has said when they are faced with the delicious cheesecake. Of course, many of us know we may eat the whole thing in the end.
    It isn't just girls. Most of us find it hard to say 'no' to something attractive, However, scientists now say that willpower is very important to success and a happy life.
    Scientists in different countries have been studying the effects of willpower on people's lives for a long time. The results are similar, according to an article on February 7 in the Guardian, a famous British newspaper.
    In one experiment, scientists told young children that they could either have a marshmallow(圆形软糖) now, or two marshmallows in 15 minutes. Waiting obviously needed more willpower. Scientists then continued studying the children as they grew up. They wanted to see if some children always had stronger willpower. They also wanted to see how having stronger willpower affected their lives.
    Years later, scientists found that the children who had waited for two marshmallows were all healthier, happier and richer adults. Oppositely, the children who had shown weaker willpower at that young age were more likely to be in low-paid jobs, to be overweight, to have social problems.
    But there is hope, Roy F Baumeister, an American social psychology(心理学) professor(教授) told the Guardian. Baumeister says we can train our willpower just like we train our muscles.  Even a little practice can strengthen our overall self-control if we do it regularly.
    You could start by making yourself stand up straight, speaking in complete sentences, or using a computer mouse with the other hand. Scientists have found that people who manage to change little habits often perform much better in laboratory willpower tests.
    Like muscles, willpower can 'get tired'. Don't try to do too many things at the same time, or when you don't have enough energy, for example when you are ill.  If you already feel tired, you can try to recharge(恢复) your willpower with a good night's sleep and by eating well.

读图，完成以下小题。