(a).(10分)令,請找出微分方程式之解。

47. 請根據選文內容，從兩則故事中各選出一個單詞（word），分別填入下列兩句的空格，並視語法需要作適當的字形變化，使句子語意完整、語法正確，且符合全文文意。（填空，4分） With her amazing courage and swimming skills, Yusra Mardini was not only able to save lives but also fulfill her dream of __(A)__ in the Olympic Games. Judo helped Popole Misenga to be strong both physically and mentally, and gave him the courage to escape from the __(B)__ of his coaches.