兴趣小组同学编排短剧《公车上书》时，需要交代的背景是 [ ]
A．义和团运动兴起
B．圆明园被毁
C．《马关条约》的签订
D．八国联军侵入北京
答案：C
Read and order. 根据时间先后排列句子。
( ) It's four twenty in the afternoon. It's time for P. E. class.
( ) It's two fifty in the afternoon. It's time for Chinese class.
( ) It's eight thirty in the morning. It's time for music class.
( ) It's nine forty-five in the morning. It's time for math class.
( ) It's eleven five. It's time for English class.
一个标准的HTML文件是以标记开始，并以什么标记结束（）
A．
B．
C．
D．
