用所给词的适当形式填空

    My name is Lisa. I'm from America, but now my dad, my mum and I are in Shanghai. My dad and my mom are English teachers. But sometimes My father goes to learn Chinese. So he is a student, too. We are in No.12 Middle School.

    Mary, Liu Ying, Wang Haobin are my friends. Mary is from England and she is thirteen years old. Liu Ying is from the capital of China. She and I are fourteen years old. Her English name is Rose. Wang Haobin is from Wenzhou. But he likes Shanghai.

观察下列各式：2×$\sqrt{\frac{2}{3}}$=$\sqrt{2+\frac{2}{3}}$，3×$\sqrt{\frac{3}{8}}$=$\sqrt{3+\frac{3}{8}}$，4×$\sqrt{\frac{4}{15}}$=$\sqrt{4+\frac{4}{15}}$，…，则依次第五个式子是____ 

下图是小东同学在一篇文章中看到的插图，该插图反映的历史事件是（   ）