阅读下列材料，回答问题。

材料一：东亚某区域示意图。

材料二：2016年7月8日，美国和韩国不顾包括中国、俄罗斯在内的有关国家的坚决反对，以应对朝鲜核与导弹威胁为由，宣布将在韩国部署“萨德”反导系统。这一系统不仅直接损害中国的战略安全利益，也损害本地区其他国家的安全利益。

材料三：关于中美新型关系的内涵，***主席曾经在与美国总统奥巴马的会晤中用三句话作了精辟概括：一是不冲突、不对抗；二是相互尊重；三是合作共赢。

作文：
       父母养育了你，老师培育了你，朋友帮助了你……大自然给你启迪，社会给你经验；挫折使你成熟，成功让你奋起……对于这一切，你一定心怀感激。
       请你以“感谢         ”为题，写一篇有真情实感的文章。（除诗歌外，文体不限）
       要求：
       ①把题目补充完整 
       ②不少于600字  
       ③文章不得出现真实的人名和校名。

    The Chinese used the abacus as early as the 2^nd century BC, but now are welcoming“machine brains”to educate the young in this modern age.

    For the young, e-learning seems so1Zhu Xufei, 12, uses her parents' mobile phone to study English every day on her way to school and back home. Through an app, she can listen to and repeat back words and sentences in English. The app even tells the difference between her speech and proper pronunciation, and then 2 provides the score.

    The mother of 12-year-old Zhu said,“The apps have enabled her to learn and practice spoken English anytime, anywhere,”she says.“The apps also have been designed to use games to encourage learning.”

    It's very popular nowadays, especially with parents. WeChat accounts of parents post progress reports every day on 3their children are doing. For example,“Day 30: My son Thomas has learned 99 English words on Talking Pets.”

    It's not only children using mobile devices（设备）to learn new things. Many Metro or bus passengers can be seen with earplugs turned into app courses, like business management or the driving test.“I don't have to4books around and turn pages on crowded buses,”an office lady says.“With just a touch of the screen on my smartphone, I can do practice tests whenever I have time. It also records my 5 and makes it easier for me to review them.”

    E-learning has been welcomed among education services. Zheng Lili, owner of an English training school, says the learning apps help6 better monitor the performances of students.

    We believe that education should be'whole-person'development and such devices are just support tools.

等式左边加一个数，右边减去同一个数，所得结果仍然是等式．

张爷爷家养了6只鸡，9只鸭子，8只鹅，鸡的只数是鹅的（            ）。