BaCl₂是一种重金属盐，其水溶液具有很强的毒性。若误服了BaCl₂溶液可立即服用MgSO₄溶液解毒。为测定某BaCl₂溶液的溶质质量分数，现取100克BaCl₂溶液，不断加入MgSO₄溶液，反应过程中溶液总质量与加入MgSO₄溶液的质量关系如图所示，请回答：

已知a₁，a₂，a₃，a₄是各项均为正数的等差数列，其公差d大于零，若线段l₁，l₂，l₃，l₄的长分别为a₁，a₂，a₃，a₄，则（　　）

我的读书经验

冯友兰

    ①我7岁上学就读书，一直读了80年，基本上没有间断，不能说对于读书没有一点经验。我的经验总结起来有四点：________，________，_________，_________。

    ②先说第一点。古今中外，积累起来的书真是多极了，浩如烟海。但是，书虽多，有永久价值的还是少数，我们要学会选择。可以把书分为三类，第一类是要精读的，第二类是可以泛读的，第三类是只供翻阅的。怎样知道哪些书是值得精读的呢？自古以来，已经有一位最公正的评选家，有许多推荐者向它推荐好书。这个评论家就是时间，这些推荐者就是群众。历来的群众，把他们认为有价值的书，推荐给时间。时间照着他们的推荐，把那些没有永久价值的书刷下去了，让那些有永久价值的书流传下来。现在我们所称为“经典著作”或“古典著作”的书都是经过时间考验，流传下来的。这一类的书都是应该精读的书。

    ③读的时候先要解其言，这就是说，首先要懂得它的文字，它的文字就是它的语言。语言有中外之分，也有古今之别，这叫语言文字关。攻语言关，要先作许多准备，用许多工具，如字典和词典等工具书。

    ④中国有句老话说是“书不尽言，言不尽意”，读书时即使书中的字都认得了，话全懂了，也未必能知道作书人的意思。读书要注意字里行间，又说读诗要得其“弦外音，味外味”。这都是说要在文字以外体会它的精神实质。这就是知其意。司马迁说过：“好学深思之士，心知其意。”“意”离不开语言文字，但有些是文字所不能完全表达出来的。如果只局限于语言文字，死抓住语言文字不放，那就成为死读书了。语言文字是帮助了解书的意思的拐棍。既然知道了那个意思以后，最好扔了拐棍。这就是古人所说的“得意忘言”。在人与人的关系中，过河拆桥是不道德的事。但是，在读书中，就是要过河拆桥。

    ⑤上面所说的“书不尽言，言不尽意”之下，还要加一句“意不尽理”。“理”是客观的道理，“意”是著书人的主观认识。人总是人，不是全知全能。他的主观上的体会和判断，同客观的道理总要有一定的差距，有或大或小的错误。所以读书只到“得其意”还不行，还要明其理，才不至于为前人的意所误。要把前人的“意”作为参考，和自己明白的那些客观道理，互相比较，互相补充，互相纠正。这就可能有一个比较正确的“意”。这个“意”就是自己的。读书到这个程度就算是能够现学现用，把书读活了。

    ⑥会读书的人能把死书读活，不会读书的人能把活书读死。把死书读活，就能使书为我所用；把活书读死，就是使我为书所用。能够用书而不为书所用，读书就算读到家了。

（选自《冯友兰读书与做人》，有删改）

    Success seems to find Maya Moore everywhere she goes. But life hasn't been a bed of roses for Maya and her biggest supporter, her mother.____

    Maya discovered her love of basketball in 1997 at the age of 8. That was the year the WNBA (Women's National Basketball Association) began holding games. The young girl watched WNBA star Cynthia Cooper play in Olympics.____

    Three years later her mother, Kathryn, was offered a better job in North Carolina. Kathryn decided to make the move from Missouri because North Carolina provided greater basketball opportunities. Sadly, in under two months the company downsized, and Kathryn lost her job. She remembers, “____” Maya says the difficulties brought them closer, and she praises her mom. “She's more than a teammate. I know she's going to be on my side.”

    About a year later, mother and daughter moved to Georgia, where Maya continued to play basketball. In high school she had the opportunity to play basketball against some of the nation's best players.____ Maya led her team to 125 victories and three state championships. During this time, she was named the national player of the year twice.

    ____ Maya and her mother approached the college decision like they did everything. With careful consideration, Maya chose the University of Connecticut.

A. It was a bad time.

B. It really a competitive skill.

C. The competition improved her skills.

D. You can't succeed without too much payment.

E. The path to success required a lot of hard work.

F. Maya dreamed to compete in the Olympics one day.

G. Universities compared to invite her to join their teams.