阅读下面古诗词。
                                                                                   金陵驿①
                                                                                    文天祥
                                                             草合离宫②转夕晖，孤云飘泊复何依！
                                                            山河风景元③无异，城郭人民半已非。
                                                            满地芦花和我老，旧家燕子傍谁飞？
                                                            从今别却江南路，化作啼鹃带血归。
         【注释】①本诗写于1279年，诗人战败被俘，押往大都（北京），途经金陵（南京）。此时南宋已亡，金陵已被攻破四年。②离宫：即行宫，皇帝出巡时临时居住的地方。金陵是宋朝的陪都，所以 有离宫。③元：同"原"。

风洞是能人工产生和控制气流，以模拟飞行器或物体周围气体的流动，并可量度气流对物体的作用以及观察物理现象的一种管道状实验设备．某学习小组开展风洞研究性学习活动，如图所示，在长为L=1.44m的竖直玻璃管中加竖直向上的风力，甲球从上管口正上方以速度υ₀=4m/s进入玻璃管，经过时间t=0.4s从下管口落出．当甲球进入玻璃管的同时，在玻璃管旁、距离上管口h=0.5m处，乙球开始做自由落体运动，g取10m/s²．求：

根据短文理解，从A、B、C、D四个选项中选择正确答案填空。

    Life is not easy, so I'd like to say, “When anything happens, believe in yourself.”

    When I was a young boy, I was too 1 to talk to anyone. My classmates often laughed at me. I was sad but could do 2. Later, something happened, and it changed my life. It was an English speech(比赛) competition. My mother asked me to take part in it. What a terrible idea! It meant I had to speak 3 all the teachers and students of my school!

    “Come on, boy. Believe in yourself. You are sure to  4. Then mother and I talked about many different topics(话题). At last I 5 the topic “Believe in yourself". I tried my best to remember all the speech and practised it over 100 6.

    With my mother's great love, I did 7 in the contest. I could hardly believe my 8 when the news came that I had won the first place. I heard the cheers from the teachers and students. Those classmates who once looked down on me, now all said “Congratulations!” to me. My mother hugged (拥抱)me and cried 9.

    Since then(从那以后), everything has 10 for me. When I do anything, I try to tell myself to be sure and I will find myself. This is true not only for a person but also for a country.