阅读下面的文言语段，完成下列小题。

梨酒

       仲宾又云：向其家有梨园，其树之大者每株收梨二车。忽一岁盛生触处皆然数倍常年以此不可售甚至用以饲猪其贱可知。有所谓山梨者，味极佳，意颇惜之。漫用大^①瓮储数百枚，以缶盖而^②泥其口，意欲久藏，旋取食之。久则忘之，及半岁后，因至园中，忽闻酒气熏人。疑守舍者酿熟，因索之，则无有也。因启观所藏梨，则化而为水，清冷可爱；湛然甘美，真佳酝也，饮之辄醉。回回国葡萄酒，止用葡萄酿之，初不杂以他物。始知梨可酿，前所未闻也。

                                                                                                                                                                                               选自周密《癸辛杂识》

      【注】①瓮：陶制的容器。②泥：涂抹。

—Let's paint.

—OK.

从总体上审视洋务运动……在中国搞现代化运动还是具有便利条件的，如中国人不排斥引进先进的技术和设备，与欧洲现代化开始时相比，中国男人的文化水平一般要高出很多。但是士大夫阶层参与度不够，致使洋务运动的中坚力量人才长期匮乏。”由此可知，材料认为阻碍洋务运动发展的根源在于（   ）

Choose the best topic from A to F according to the meaning of the passage.

 A"Gap Year" is a period of time when a student takes a break before going to university. It is often spent travelling or working. It can give young people useful learning experiences and new skills. It's very popular in foreign countries.____ 

 Although you don't have to go abroad to experience gap years, most gap year students catch the chance to travel abroad. You are able to work out who you are and what you are for. The experiences of different cultures offer you interesting lessons. You can learn more about the world and get to know yourself better.____ 

A gap year is not only a time to take a vacation, but also a time to face challenges. Gap year students usually work, volunteer or take service projects. You have to learn how to get along in the real world. This process isn't always easy, but it is an important part of growing up. Only in this way can you enjoy life and have fun.____ 

 There's a common thought that gap years are only for rich students, but it's not true. Actually, taking a gap year can save your money. Gap year students often take a part-time job. Besides, at the end of a gap year, students are much more likely to know what to study in college. Clear learning goals can keep the students working hard instead of wasting time and money playing.____ 

 Imagine an admission officer trying to admit(录取) only one between two students. Both of them are excellent and have high grades. However, one student has much practical experience or has volunteered in his vacation. Who do you think the admission officer will choose?____ 

“地质力学”是运用力学原理研究地壳构造和地壳运动规律及其起因的学科。它是由中国李四光创立的。“地质力学”名词正式提出是在其哪篇论著(    )