文天祥抗元被俘，但他在异族强权面前，正气浩然，风骨铮铮，写下了“人生自古谁无死，留取丹心照汗青”的千古绝唱。他的这种气节反映了当时社会的思想主流是（ ）

已知圆C：${\left(x-a\right)}^2+{\left(y-b\right)}^2=r^2$的圆心为抛物线$y^2=4x$的焦点，直线3x＋4y＋2＝0与圆C相切，则该圆的方程为(     )

根据上下文意思，用所给单词的恰当形式完成下列短文。

      Have you ever tried to dub (为……配音) an English film? It____ (be) very interesting! I____ (join) in a film dubbing competition at our school last week. It was difficult for me because my spoken English is not so good. But I still decided to have a try. First, I chose my favourite part of a movie. I tried my best to follow the characters’ pronunciation. When I showed my work to my____(classmate) in this competition, to my surprise, they were proud of me! I love such interesting competitions. They not only build my self-confidence (自信) but also improve my spoken English.

         Now, everyone____(practice) English like me. We hope we____ (have) chances to join more and more competitions in the future.

材料一：“以国王权威停止法律或停止法律实施之僭越权力，为非法权力。”

材料二：第一次工业革命的发明

材料三：过去以天位单位，现在以分钟、秒计算；……火车还教会人们守时，准时准点成了现代生活的准则，人们开始要随身带上一块表，时间概念是一个全新的概念。

——钱乘旦、许杰明《英国通史》